Home / 87,403.75-121,073.99-85,632.28

Finding the Fourth Proportional to 87,403.75, 121,073.99 and 85,632.28

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Solution

The fourth proportional to 87,403.75, 121,073.99 and 85,632.28 is: 118,620.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,403.75 : 121,073.99 = 85,632.28 : x
  2. Step 2: Convert to fraction form
    87,403.75/121,073.99 = 85,632.28/x
  3. Step 3: Cross multiply
    87,403.75x = 121,073.99 × 85,632.28
  4. Step 4: Simplify right side
    87,403.75x = 10,367,841,812.40
  5. Step 5: Solve for x
    x = 10,367,841,812.40/87,403.75
  6. Step 6: Final answer
    x = 118,620.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.