Home / 126,912.48-175,117.02-72,439.78

Finding the Fourth Proportional to 126,912.48, 175,117.02 and 72,439.78

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Solution

The fourth proportional to 126,912.48, 175,117.02 and 72,439.78 is: 99,954.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,912.48 : 175,117.02 = 72,439.78 : x
  2. Step 2: Convert to fraction form
    126,912.48/175,117.02 = 72,439.78/x
  3. Step 3: Cross multiply
    126,912.48x = 175,117.02 × 72,439.78
  4. Step 4: Simplify right side
    126,912.48x = 12,685,438,403.06
  5. Step 5: Solve for x
    x = 12,685,438,403.06/126,912.48
  6. Step 6: Final answer
    x = 99,954.22

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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.