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Finding the Fourth Proportional to 126,478.98, 174,577.41 and 83,489.88

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Solution

The fourth proportional to 126,478.98, 174,577.41 and 83,489.88 is: 115,240.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,478.98 : 174,577.41 = 83,489.88 : x
  2. Step 2: Convert to fraction form
    126,478.98/174,577.41 = 83,489.88/x
  3. Step 3: Cross multiply
    126,478.98x = 174,577.41 × 83,489.88
  4. Step 4: Simplify right side
    126,478.98x = 14,575,447,011.61
  5. Step 5: Solve for x
    x = 14,575,447,011.61/126,478.98
  6. Step 6: Final answer
    x = 115,240.07

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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.