Home / 101,932.84-140,559.78-71,708.20

Finding the Fourth Proportional to 101,932.84, 140,559.78 and 71,708.20

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Solution

The fourth proportional to 101,932.84, 140,559.78 and 71,708.20 is: 98,881.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,932.84 : 140,559.78 = 71,708.20 : x
  2. Step 2: Convert to fraction form
    101,932.84/140,559.78 = 71,708.20/x
  3. Step 3: Cross multiply
    101,932.84x = 140,559.78 × 71,708.20
  4. Step 4: Simplify right side
    101,932.84x = 10,079,288,816.20
  5. Step 5: Solve for x
    x = 10,079,288,816.20/101,932.84
  6. Step 6: Final answer
    x = 98,881.66

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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.