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Finding the Fourth Proportional to 161,956.10, 242,934.15 and 91,097.30

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Solution

The fourth proportional to 161,956.10, 242,934.15 and 91,097.30 is: 136,645.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,956.10 : 242,934.15 = 91,097.30 : x
  2. Step 2: Convert to fraction form
    161,956.10/242,934.15 = 91,097.30/x
  3. Step 3: Cross multiply
    161,956.10x = 242,934.15 × 91,097.30
  4. Step 4: Simplify right side
    161,956.10x = 22,130,645,142.80
  5. Step 5: Solve for x
    x = 22,130,645,142.80/161,956.10
  6. Step 6: Final answer
    x = 136,645.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.