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Finding the Fourth Proportional to 99,203.38, 136,901.67 and 53,881.80

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Solution

The fourth proportional to 99,203.38, 136,901.67 and 53,881.80 is: 74,357.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,203.38 : 136,901.67 = 53,881.80 : x
  2. Step 2: Convert to fraction form
    99,203.38/136,901.67 = 53,881.80/x
  3. Step 3: Cross multiply
    99,203.38x = 136,901.67 × 53,881.80
  4. Step 4: Simplify right side
    99,203.38x = 7,376,508,402.61
  5. Step 5: Solve for x
    x = 7,376,508,402.61/99,203.38
  6. Step 6: Final answer
    x = 74,357.43

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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.