Home / 99,868.08-137,628.48-71,524.56

Finding the Fourth Proportional to 99,868.08, 137,628.48 and 71,524.56

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Solution

The fourth proportional to 99,868.08, 137,628.48 and 71,524.56 is: 98,568.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,868.08 : 137,628.48 = 71,524.56 : x
  2. Step 2: Convert to fraction form
    99,868.08/137,628.48 = 71,524.56/x
  3. Step 3: Cross multiply
    99,868.08x = 137,628.48 × 71,524.56
  4. Step 4: Simplify right side
    99,868.08x = 9,843,816,475.47
  5. Step 5: Solve for x
    x = 9,843,816,475.47/99,868.08
  6. Step 6: Final answer
    x = 98,568.20

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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.