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Finding the Fourth Proportional to 158,306.01, 218,454.15 and 86,672.18

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Solution

The fourth proportional to 158,306.01, 218,454.15 and 86,672.18 is: 119,603.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,306.01 : 218,454.15 = 86,672.18 : x
  2. Step 2: Convert to fraction form
    158,306.01/218,454.15 = 86,672.18/x
  3. Step 3: Cross multiply
    158,306.01x = 218,454.15 × 86,672.18
  4. Step 4: Simplify right side
    158,306.01x = 18,933,897,338.95
  5. Step 5: Solve for x
    x = 18,933,897,338.95/158,306.01
  6. Step 6: Final answer
    x = 119,603.15

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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.