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Finding the Fourth Proportional to 126,892.50, 175,032.46 and 81,629.50

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Solution

The fourth proportional to 126,892.50, 175,032.46 and 81,629.50 is: 112,597.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,892.50 : 175,032.46 = 81,629.50 : x
  2. Step 2: Convert to fraction form
    126,892.50/175,032.46 = 81,629.50/x
  3. Step 3: Cross multiply
    126,892.50x = 175,032.46 × 81,629.50
  4. Step 4: Simplify right side
    126,892.50x = 14,287,812,193.57
  5. Step 5: Solve for x
    x = 14,287,812,193.57/126,892.50
  6. Step 6: Final answer
    x = 112,597.77

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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.