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Finding the Fourth Proportional to 126,759.74, 174,938.15 and 72,313.10

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Solution

The fourth proportional to 126,759.74, 174,938.15 and 72,313.10 is: 99,797.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,759.74 : 174,938.15 = 72,313.10 : x
  2. Step 2: Convert to fraction form
    126,759.74/174,938.15 = 72,313.10/x
  3. Step 3: Cross multiply
    126,759.74x = 174,938.15 × 72,313.10
  4. Step 4: Simplify right side
    126,759.74x = 12,650,320,417.31
  5. Step 5: Solve for x
    x = 12,650,320,417.31/126,759.74
  6. Step 6: Final answer
    x = 99,797.62

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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.