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Finding the Fourth Proportional to 162,137.70, 243,207.36 and 73,287.18

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Solution

The fourth proportional to 162,137.70, 243,207.36 and 73,287.18 is: 109,931.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,137.70 : 243,207.36 = 73,287.18 : x
  2. Step 2: Convert to fraction form
    162,137.70/243,207.36 = 73,287.18/x
  3. Step 3: Cross multiply
    162,137.70x = 243,207.36 × 73,287.18
  4. Step 4: Simplify right side
    162,137.70x = 17,823,981,569.64
  5. Step 5: Solve for x
    x = 17,823,981,569.64/162,137.70
  6. Step 6: Final answer
    x = 109,931.14

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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.