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Finding the Fourth Proportional to 136,445.88, 204,327 and 86,374.92

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Solution

The fourth proportional to 136,445.88, 204,327 and 86,374.92 is: 129,346.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,445.88 : 204,327 = 86,374.92 : x
  2. Step 2: Convert to fraction form
    136,445.88/204,327 = 86,374.92/x
  3. Step 3: Cross multiply
    136,445.88x = 204,327 × 86,374.92
  4. Step 4: Simplify right side
    136,445.88x = 17,648,728,278.84
  5. Step 5: Solve for x
    x = 17,648,728,278.84/136,445.88
  6. Step 6: Final answer
    x = 129,346.00

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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.