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Finding the Fourth Proportional to 99,496.98, 148,517.51 and 87,687.54

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Solution

The fourth proportional to 99,496.98, 148,517.51 and 87,687.54 is: 130,889.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,496.98 : 148,517.51 = 87,687.54 : x
  2. Step 2: Convert to fraction form
    99,496.98/148,517.51 = 87,687.54/x
  3. Step 3: Cross multiply
    99,496.98x = 148,517.51 × 87,687.54
  4. Step 4: Simplify right side
    99,496.98x = 13,023,134,660.39
  5. Step 5: Solve for x
    x = 13,023,134,660.39/99,496.98
  6. Step 6: Final answer
    x = 130,889.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.