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Finding the Fourth Proportional to 115,909.30, 173,535.90 and 102,787.30

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Solution

The fourth proportional to 115,909.30, 173,535.90 and 102,787.30 is: 153,890.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,909.30 : 173,535.90 = 102,787.30 : x
  2. Step 2: Convert to fraction form
    115,909.30/173,535.90 = 102,787.30/x
  3. Step 3: Cross multiply
    115,909.30x = 173,535.90 × 102,787.30
  4. Step 4: Simplify right side
    115,909.30x = 17,837,286,614.07
  5. Step 5: Solve for x
    x = 17,837,286,614.07/115,909.30
  6. Step 6: Final answer
    x = 153,890.04

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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.