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Finding the Fourth Proportional to 158,630.61, 218,865.87 and 102,074.79

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Solution

The fourth proportional to 158,630.61, 218,865.87 and 102,074.79 is: 140,834.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,630.61 : 218,865.87 = 102,074.79 : x
  2. Step 2: Convert to fraction form
    158,630.61/218,865.87 = 102,074.79/x
  3. Step 3: Cross multiply
    158,630.61x = 218,865.87 × 102,074.79
  4. Step 4: Simplify right side
    158,630.61x = 22,340,687,718.42
  5. Step 5: Solve for x
    x = 22,340,687,718.42/158,630.61
  6. Step 6: Final answer
    x = 140,834.66

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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.