Home / 103,654.17-155,787.99-85,999.36

Finding the Fourth Proportional to 103,654.17, 155,787.99 and 85,999.36

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Solution

The fourth proportional to 103,654.17, 155,787.99 and 85,999.36 is: 129,253.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,654.17 : 155,787.99 = 85,999.36 : x
  2. Step 2: Convert to fraction form
    103,654.17/155,787.99 = 85,999.36/x
  3. Step 3: Cross multiply
    103,654.17x = 155,787.99 × 85,999.36
  4. Step 4: Simplify right side
    103,654.17x = 13,397,667,435.69
  5. Step 5: Solve for x
    x = 13,397,667,435.69/103,654.17
  6. Step 6: Final answer
    x = 129,253.53

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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.