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Finding the Fourth Proportional to 120,175.74, 180,000.90 and 60,909.66

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Solution

The fourth proportional to 120,175.74, 180,000.90 and 60,909.66 is: 91,231.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,175.74 : 180,000.90 = 60,909.66 : x
  2. Step 2: Convert to fraction form
    120,175.74/180,000.90 = 60,909.66/x
  3. Step 3: Cross multiply
    120,175.74x = 180,000.90 × 60,909.66
  4. Step 4: Simplify right side
    120,175.74x = 10,963,793,618.69
  5. Step 5: Solve for x
    x = 10,963,793,618.69/120,175.74
  6. Step 6: Final answer
    x = 91,231.34

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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.