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Finding the Fourth Proportional to 138,433.92, 191,010.24 and 88,114.56

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Solution

The fourth proportional to 138,433.92, 191,010.24 and 88,114.56 is: 121,579.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,433.92 : 191,010.24 = 88,114.56 : x
  2. Step 2: Convert to fraction form
    138,433.92/191,010.24 = 88,114.56/x
  3. Step 3: Cross multiply
    138,433.92x = 191,010.24 × 88,114.56
  4. Step 4: Simplify right side
    138,433.92x = 16,830,783,253.09
  5. Step 5: Solve for x
    x = 16,830,783,253.09/138,433.92
  6. Step 6: Final answer
    x = 121,579.91

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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.