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Finding the Fourth Proportional to 147,374.61, 203,376.92 and 80,306.61

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Solution

The fourth proportional to 147,374.61, 203,376.92 and 80,306.61 is: 110,823.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,374.61 : 203,376.92 = 80,306.61 : x
  2. Step 2: Convert to fraction form
    147,374.61/203,376.92 = 80,306.61/x
  3. Step 3: Cross multiply
    147,374.61x = 203,376.92 × 80,306.61
  4. Step 4: Simplify right side
    147,374.61x = 16,332,510,595.91
  5. Step 5: Solve for x
    x = 16,332,510,595.91/147,374.61
  6. Step 6: Final answer
    x = 110,823.10

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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.