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Finding the Fourth Proportional to 158,524.18, 218,761.52 and 86,904.18

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Solution

The fourth proportional to 158,524.18, 218,761.52 and 86,904.18 is: 119,926.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,524.18 : 218,761.52 = 86,904.18 : x
  2. Step 2: Convert to fraction form
    158,524.18/218,761.52 = 86,904.18/x
  3. Step 3: Cross multiply
    158,524.18x = 218,761.52 × 86,904.18
  4. Step 4: Simplify right side
    158,524.18x = 19,011,290,511.15
  5. Step 5: Solve for x
    x = 19,011,290,511.15/158,524.18
  6. Step 6: Final answer
    x = 119,926.76

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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.