Home / 138,426.92-191,032.11-77,176.88

Finding the Fourth Proportional to 138,426.92, 191,032.11 and 77,176.88

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Solution

The fourth proportional to 138,426.92, 191,032.11 and 77,176.88 is: 106,505.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,426.92 : 191,032.11 = 77,176.88 : x
  2. Step 2: Convert to fraction form
    138,426.92/191,032.11 = 77,176.88/x
  3. Step 3: Cross multiply
    138,426.92x = 191,032.11 × 77,176.88
  4. Step 4: Simplify right side
    138,426.92x = 14,743,261,274.46
  5. Step 5: Solve for x
    x = 14,743,261,274.46/138,426.92
  6. Step 6: Final answer
    x = 106,505.74

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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.