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Finding the Fourth Proportional to 136,952.10, 205,428.15 and 115,956.90

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Solution

The fourth proportional to 136,952.10, 205,428.15 and 115,956.90 is: 173,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,952.10 : 205,428.15 = 115,956.90 : x
  2. Step 2: Convert to fraction form
    136,952.10/205,428.15 = 115,956.90/x
  3. Step 3: Cross multiply
    136,952.10x = 205,428.15 × 115,956.90
  4. Step 4: Simplify right side
    136,952.10x = 23,820,811,446.74
  5. Step 5: Solve for x
    x = 23,820,811,446.74/136,952.10
  6. Step 6: Final answer
    x = 173,935.35

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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.