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Finding the Fourth Proportional to 243,490.87, 336,016.66 and 136,061.01

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Solution

The fourth proportional to 243,490.87, 336,016.66 and 136,061.01 is: 187,763.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,490.87 : 336,016.66 = 136,061.01 : x
  2. Step 2: Convert to fraction form
    243,490.87/336,016.66 = 136,061.01/x
  3. Step 3: Cross multiply
    243,490.87x = 336,016.66 × 136,061.01
  4. Step 4: Simplify right side
    243,490.87x = 45,718,766,136.43
  5. Step 5: Solve for x
    x = 45,718,766,136.43/243,490.87
  6. Step 6: Final answer
    x = 187,763.78

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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.