Home / 129,154,136.91-178,227,575.24-76,247,886.61

Finding the Fourth Proportional to 129,154,136.91, 178,227,575.24 and 76,247,886.61

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Solution

The fourth proportional to 129,154,136.91, 178,227,575.24 and 76,247,886.61 is: 105,219,052.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,154,136.91 : 178,227,575.24 = 76,247,886.61 : x
  2. Step 2: Convert to fraction form
    129,154,136.91/178,227,575.24 = 76,247,886.61/x
  3. Step 3: Cross multiply
    129,154,136.91x = 178,227,575.24 × 76,247,886.61
  4. Step 4: Simplify right side
    129,154,136.91x = 13,589,475,947,419,816
  5. Step 5: Solve for x
    x = 13,589,475,947,419,816/129,154,136.91
  6. Step 6: Final answer
    x = 105,219,052.77

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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.