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Finding the Fourth Proportional to 99,159.39, 136,843.02 and 56,731.59

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Solution

The fourth proportional to 99,159.39, 136,843.02 and 56,731.59 is: 78,291.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,159.39 : 136,843.02 = 56,731.59 : x
  2. Step 2: Convert to fraction form
    99,159.39/136,843.02 = 56,731.59/x
  3. Step 3: Cross multiply
    99,159.39x = 136,843.02 × 56,731.59
  4. Step 4: Simplify right side
    99,159.39x = 7,763,322,105.00
  5. Step 5: Solve for x
    x = 7,763,322,105.00/99,159.39
  6. Step 6: Final answer
    x = 78,291.35

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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.