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Finding the Fourth Proportional to 158,254.59, 218,395.17 and 86,634.39

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Solution

The fourth proportional to 158,254.59, 218,395.17 and 86,634.39 is: 119,557.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,254.59 : 218,395.17 = 86,634.39 : x
  2. Step 2: Convert to fraction form
    158,254.59/218,395.17 = 86,634.39/x
  3. Step 3: Cross multiply
    158,254.59x = 218,395.17 × 86,634.39
  4. Step 4: Simplify right side
    158,254.59x = 18,920,532,331.90
  5. Step 5: Solve for x
    x = 18,920,532,331.90/158,254.59
  6. Step 6: Final answer
    x = 119,557.56

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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.