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Finding the Fourth Proportional to 120,113.70, 180,170.55 and 61,064.70

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Solution

The fourth proportional to 120,113.70, 180,170.55 and 61,064.70 is: 91,597.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,113.70 : 180,170.55 = 61,064.70 : x
  2. Step 2: Convert to fraction form
    120,113.70/180,170.55 = 61,064.70/x
  3. Step 3: Cross multiply
    120,113.70x = 180,170.55 × 61,064.70
  4. Step 4: Simplify right side
    120,113.70x = 11,002,060,584.59
  5. Step 5: Solve for x
    x = 11,002,060,584.59/120,113.70
  6. Step 6: Final answer
    x = 91,597.05

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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.