Home / 120,127.92-165,777.18-65,680.26

Finding the Fourth Proportional to 120,127.92, 165,777.18 and 65,680.26

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Solution

The fourth proportional to 120,127.92, 165,777.18 and 65,680.26 is: 90,639.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,127.92 : 165,777.18 = 65,680.26 : x
  2. Step 2: Convert to fraction form
    120,127.92/165,777.18 = 65,680.26/x
  3. Step 3: Cross multiply
    120,127.92x = 165,777.18 × 65,680.26
  4. Step 4: Simplify right side
    120,127.92x = 10,888,288,284.47
  5. Step 5: Solve for x
    x = 10,888,288,284.47/120,127.92
  6. Step 6: Final answer
    x = 90,639.11

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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.