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Finding the Fourth Proportional to 120,179.70, 180,269.55 and 56,999.70

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Solution

The fourth proportional to 120,179.70, 180,269.55 and 56,999.70 is: 85,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,179.70 : 180,269.55 = 56,999.70 : x
  2. Step 2: Convert to fraction form
    120,179.70/180,269.55 = 56,999.70/x
  3. Step 3: Cross multiply
    120,179.70x = 180,269.55 × 56,999.70
  4. Step 4: Simplify right side
    120,179.70x = 10,275,310,269.14
  5. Step 5: Solve for x
    x = 10,275,310,269.14/120,179.70
  6. Step 6: Final answer
    x = 85,499.55

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Half scale
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Double scale
Find fourth proportional to 120,180.70, 180,271.05 and 57,000.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.