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Finding the Fourth Proportional to 178,671.61, 268,053.89 and 66,384.20

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Solution

The fourth proportional to 178,671.61, 268,053.89 and 66,384.20 is: 99,593.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,671.61 : 268,053.89 = 66,384.20 : x
  2. Step 2: Convert to fraction form
    178,671.61/268,053.89 = 66,384.20/x
  3. Step 3: Cross multiply
    178,671.61x = 268,053.89 × 66,384.20
  4. Step 4: Simplify right side
    178,671.61x = 17,794,543,044.54
  5. Step 5: Solve for x
    x = 17,794,543,044.54/178,671.61
  6. Step 6: Final answer
    x = 99,593.57

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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.