Home / 120,131.46-165,767.85-66,402.90

Finding the Fourth Proportional to 120,131.46, 165,767.85 and 66,402.90

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Solution

The fourth proportional to 120,131.46, 165,767.85 and 66,402.90 is: 91,628.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,131.46 : 165,767.85 = 66,402.90 : x
  2. Step 2: Convert to fraction form
    120,131.46/165,767.85 = 66,402.90/x
  3. Step 3: Cross multiply
    120,131.46x = 165,767.85 × 66,402.90
  4. Step 4: Simplify right side
    120,131.46x = 11,007,465,966.77
  5. Step 5: Solve for x
    x = 11,007,465,966.77/120,131.46
  6. Step 6: Final answer
    x = 91,628.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.