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Finding the Fourth Proportional to 158,337.75, 218,508.47 and 86,724.45

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Solution

The fourth proportional to 158,337.75, 218,508.47 and 86,724.45 is: 119,681.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,337.75 : 218,508.47 = 86,724.45 : x
  2. Step 2: Convert to fraction form
    158,337.75/218,508.47 = 86,724.45/x
  3. Step 3: Cross multiply
    158,337.75x = 218,508.47 × 86,724.45
  4. Step 4: Simplify right side
    158,337.75x = 18,950,026,447.47
  5. Step 5: Solve for x
    x = 18,950,026,447.47/158,337.75
  6. Step 6: Final answer
    x = 119,681.04

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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.