Home / 101,472.20-140,015.28-63,719.72

Finding the Fourth Proportional to 101,472.20, 140,015.28 and 63,719.72

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Solution

The fourth proportional to 101,472.20, 140,015.28 and 63,719.72 is: 87,922.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,472.20 : 140,015.28 = 63,719.72 : x
  2. Step 2: Convert to fraction form
    101,472.20/140,015.28 = 63,719.72/x
  3. Step 3: Cross multiply
    101,472.20x = 140,015.28 × 63,719.72
  4. Step 4: Simplify right side
    101,472.20x = 8,921,734,437.32
  5. Step 5: Solve for x
    x = 8,921,734,437.32/101,472.20
  6. Step 6: Final answer
    x = 87,922.94

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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.