Home / 112,781.90-155,655.60-65,025.92

Finding the Fourth Proportional to 112,781.90, 155,655.60 and 65,025.92

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Solution

The fourth proportional to 112,781.90, 155,655.60 and 65,025.92 is: 89,745.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,781.90 : 155,655.60 = 65,025.92 : x
  2. Step 2: Convert to fraction form
    112,781.90/155,655.60 = 65,025.92/x
  3. Step 3: Cross multiply
    112,781.90x = 155,655.60 × 65,025.92
  4. Step 4: Simplify right side
    112,781.90x = 10,121,648,593.15
  5. Step 5: Solve for x
    x = 10,121,648,593.15/112,781.90
  6. Step 6: Final answer
    x = 89,745.33

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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.