Home / 138,939.28-191,735.02-75,276.92

Finding the Fourth Proportional to 138,939.28, 191,735.02 and 75,276.92

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Solution

The fourth proportional to 138,939.28, 191,735.02 and 75,276.92 is: 103,881.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,939.28 : 191,735.02 = 75,276.92 : x
  2. Step 2: Convert to fraction form
    138,939.28/191,735.02 = 75,276.92/x
  3. Step 3: Cross multiply
    138,939.28x = 191,735.02 × 75,276.92
  4. Step 4: Simplify right side
    138,939.28x = 14,433,221,761.74
  5. Step 5: Solve for x
    x = 14,433,221,761.74/138,939.28
  6. Step 6: Final answer
    x = 103,881.51

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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.