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Finding the Fourth Proportional to 91,175.92, 136,452.60 and 76,401.52

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Solution

The fourth proportional to 91,175.92, 136,452.60 and 76,401.52 is: 114,341.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,175.92 : 136,452.60 = 76,401.52 : x
  2. Step 2: Convert to fraction form
    91,175.92/136,452.60 = 76,401.52/x
  3. Step 3: Cross multiply
    91,175.92x = 136,452.60 × 76,401.52
  4. Step 4: Simplify right side
    91,175.92x = 10,425,186,047.95
  5. Step 5: Solve for x
    x = 10,425,186,047.95/91,175.92
  6. Step 6: Final answer
    x = 114,341.44

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1.5x scale

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.