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Finding the Fourth Proportional to 100,553.66, 138,764.33 and 55,841.66

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Solution

The fourth proportional to 100,553.66, 138,764.33 and 55,841.66 is: 77,061.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,553.66 : 138,764.33 = 55,841.66 : x
  2. Step 2: Convert to fraction form
    100,553.66/138,764.33 = 55,841.66/x
  3. Step 3: Cross multiply
    100,553.66x = 138,764.33 × 55,841.66
  4. Step 4: Simplify right side
    100,553.66x = 7,748,830,535.99
  5. Step 5: Solve for x
    x = 7,748,830,535.99/100,553.66
  6. Step 6: Final answer
    x = 77,061.65

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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.