Home / 87,390.02-130,447.04-74,989.73

Finding the Fourth Proportional to 87,390.02, 130,447.04 and 74,989.73

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Solution

The fourth proportional to 87,390.02, 130,447.04 and 74,989.73 is: 111,937.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,390.02 : 130,447.04 = 74,989.73 : x
  2. Step 2: Convert to fraction form
    87,390.02/130,447.04 = 74,989.73/x
  3. Step 3: Cross multiply
    87,390.02x = 130,447.04 × 74,989.73
  4. Step 4: Simplify right side
    87,390.02x = 9,782,188,308.90
  5. Step 5: Solve for x
    x = 9,782,188,308.90/87,390.02
  6. Step 6: Final answer
    x = 111,937.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.