Home / 131,332.90-197,145.15-81,469.30

Finding the Fourth Proportional to 131,332.90, 197,145.15 and 81,469.30

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Solution

The fourth proportional to 131,332.90, 197,145.15 and 81,469.30 is: 122,294.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,332.90 : 197,145.15 = 81,469.30 : x
  2. Step 2: Convert to fraction form
    131,332.90/197,145.15 = 81,469.30/x
  3. Step 3: Cross multiply
    131,332.90x = 197,145.15 × 81,469.30
  4. Step 4: Simplify right side
    131,332.90x = 16,061,277,368.90
  5. Step 5: Solve for x
    x = 16,061,277,368.90/131,332.90
  6. Step 6: Final answer
    x = 122,294.39

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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.