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Finding the Fourth Proportional to 178,833.80, 268,248.90 and 72,215.96

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Solution

The fourth proportional to 178,833.80, 268,248.90 and 72,215.96 is: 108,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,833.80 : 268,248.90 = 72,215.96 : x
  2. Step 2: Convert to fraction form
    178,833.80/268,248.90 = 72,215.96/x
  3. Step 3: Cross multiply
    178,833.80x = 268,248.90 × 72,215.96
  4. Step 4: Simplify right side
    178,833.80x = 19,371,851,832.44
  5. Step 5: Solve for x
    x = 19,371,851,832.44/178,833.80
  6. Step 6: Final answer
    x = 108,323.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.