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Finding the Fourth Proportional to 120,359.70, 180,539.55 and 83,034.90

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Solution

The fourth proportional to 120,359.70, 180,539.55 and 83,034.90 is: 124,552.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,359.70 : 180,539.55 = 83,034.90 : x
  2. Step 2: Convert to fraction form
    120,359.70/180,539.55 = 83,034.90/x
  3. Step 3: Cross multiply
    120,359.70x = 180,539.55 × 83,034.90
  4. Step 4: Simplify right side
    120,359.70x = 14,991,083,480.30
  5. Step 5: Solve for x
    x = 14,991,083,480.30/120,359.70
  6. Step 6: Final answer
    x = 124,552.35

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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.