Home / 138,938.28-191,733.64-75,275.92

Finding the Fourth Proportional to 138,938.28, 191,733.64 and 75,275.92

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Solution

The fourth proportional to 138,938.28, 191,733.64 and 75,275.92 is: 103,880.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,938.28 : 191,733.64 = 75,275.92 : x
  2. Step 2: Convert to fraction form
    138,938.28/191,733.64 = 75,275.92/x
  3. Step 3: Cross multiply
    138,938.28x = 191,733.64 × 75,275.92
  4. Step 4: Simplify right side
    138,938.28x = 14,432,926,145.95
  5. Step 5: Solve for x
    x = 14,432,926,145.95/138,938.28
  6. Step 6: Final answer
    x = 103,880.13

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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.