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Finding the Fourth Proportional to 119,662.59, 165,142.16 and 68,691.81

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Solution

The fourth proportional to 119,662.59, 165,142.16 and 68,691.81 is: 94,799.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,662.59 : 165,142.16 = 68,691.81 : x
  2. Step 2: Convert to fraction form
    119,662.59/165,142.16 = 68,691.81/x
  3. Step 3: Cross multiply
    119,662.59x = 165,142.16 × 68,691.81
  4. Step 4: Simplify right side
    119,662.59x = 11,343,913,947.11
  5. Step 5: Solve for x
    x = 11,343,913,947.11/119,662.59
  6. Step 6: Final answer
    x = 94,799.17

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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.