Home / 138,592.24-191,264.76-81,232.70

Finding the Fourth Proportional to 138,592.24, 191,264.76 and 81,232.70

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Solution

The fourth proportional to 138,592.24, 191,264.76 and 81,232.70 is: 112,105.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,592.24 : 191,264.76 = 81,232.70 : x
  2. Step 2: Convert to fraction form
    138,592.24/191,264.76 = 81,232.70/x
  3. Step 3: Cross multiply
    138,592.24x = 191,264.76 × 81,232.70
  4. Step 4: Simplify right side
    138,592.24x = 15,536,951,913.33
  5. Step 5: Solve for x
    x = 15,536,951,913.33/138,592.24
  6. Step 6: Final answer
    x = 112,105.50

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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.