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Finding the Fourth Proportional to 147,468.78, 220,126.59 and 126,543.30

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Solution

The fourth proportional to 147,468.78, 220,126.59 and 126,543.30 is: 188,891.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,468.78 : 220,126.59 = 126,543.30 : x
  2. Step 2: Convert to fraction form
    147,468.78/220,126.59 = 126,543.30/x
  3. Step 3: Cross multiply
    147,468.78x = 220,126.59 × 126,543.30
  4. Step 4: Simplify right side
    147,468.78x = 27,855,545,116.35
  5. Step 5: Solve for x
    x = 27,855,545,116.35/147,468.78
  6. Step 6: Final answer
    x = 188,891.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.