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Finding the Fourth Proportional to 243,487.62, 336,012.18 and 136,057.76

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Solution

The fourth proportional to 243,487.62, 336,012.18 and 136,057.76 is: 187,759.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,487.62 : 336,012.18 = 136,057.76 : x
  2. Step 2: Convert to fraction form
    243,487.62/336,012.18 = 136,057.76/x
  3. Step 3: Cross multiply
    243,487.62x = 336,012.18 × 136,057.76
  4. Step 4: Simplify right side
    243,487.62x = 45,717,062,863.46
  5. Step 5: Solve for x
    x = 45,717,062,863.46/243,487.62
  6. Step 6: Final answer
    x = 187,759.29

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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.