Home / 126,188.72-174,139.20-72,490.56

Finding the Fourth Proportional to 126,188.72, 174,139.20 and 72,490.56

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Solution

The fourth proportional to 126,188.72, 174,139.20 and 72,490.56 is: 100,036.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,188.72 : 174,139.20 = 72,490.56 : x
  2. Step 2: Convert to fraction form
    126,188.72/174,139.20 = 72,490.56/x
  3. Step 3: Cross multiply
    126,188.72x = 174,139.20 × 72,490.56
  4. Step 4: Simplify right side
    126,188.72x = 12,623,448,125.95
  5. Step 5: Solve for x
    x = 12,623,448,125.95/126,188.72
  6. Step 6: Final answer
    x = 100,036.26

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1.5x scale

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.