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Finding the Fourth Proportional to 115,404.60, 173,106.90 and 97,689.90

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Solution

The fourth proportional to 115,404.60, 173,106.90 and 97,689.90 is: 146,534.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,404.60 : 173,106.90 = 97,689.90 : x
  2. Step 2: Convert to fraction form
    115,404.60/173,106.90 = 97,689.90/x
  3. Step 3: Cross multiply
    115,404.60x = 173,106.90 × 97,689.90
  4. Step 4: Simplify right side
    115,404.60x = 16,910,795,750.31
  5. Step 5: Solve for x
    x = 16,910,795,750.31/115,404.60
  6. Step 6: Final answer
    x = 146,534.85

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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.