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Finding the Fourth Proportional to 99,177.71, 136,864.72 and 53,855.29

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Solution

The fourth proportional to 99,177.71, 136,864.72 and 53,855.29 is: 74,320.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,177.71 : 136,864.72 = 53,855.29 : x
  2. Step 2: Convert to fraction form
    99,177.71/136,864.72 = 53,855.29/x
  3. Step 3: Cross multiply
    99,177.71x = 136,864.72 × 53,855.29
  4. Step 4: Simplify right side
    99,177.71x = 7,370,888,709.57
  5. Step 5: Solve for x
    x = 7,370,888,709.57/99,177.71
  6. Step 6: Final answer
    x = 74,320.02

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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.