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Finding the Fourth Proportional to 126,633.90, 174,680.03 and 87,811.20

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Solution

The fourth proportional to 126,633.90, 174,680.03 and 87,811.20 is: 121,127.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,633.90 : 174,680.03 = 87,811.20 : x
  2. Step 2: Convert to fraction form
    126,633.90/174,680.03 = 87,811.20/x
  3. Step 3: Cross multiply
    126,633.90x = 174,680.03 × 87,811.20
  4. Step 4: Simplify right side
    126,633.90x = 15,338,862,611.28
  5. Step 5: Solve for x
    x = 15,338,862,611.28/126,633.90
  6. Step 6: Final answer
    x = 121,127.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.