Home / 140,136.32-193,387.08-76,472.72

Finding the Fourth Proportional to 140,136.32, 193,387.08 and 76,472.72

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Solution

The fourth proportional to 140,136.32, 193,387.08 and 76,472.72 is: 105,531.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,136.32 : 193,387.08 = 76,472.72 : x
  2. Step 2: Convert to fraction form
    140,136.32/193,387.08 = 76,472.72/x
  3. Step 3: Cross multiply
    140,136.32x = 193,387.08 × 76,472.72
  4. Step 4: Simplify right side
    140,136.32x = 14,788,836,020.46
  5. Step 5: Solve for x
    x = 14,788,836,020.46/140,136.32
  6. Step 6: Final answer
    x = 105,531.79

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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.