Home / 101,690.92-140,286.00-63,985.96

Finding the Fourth Proportional to 101,690.92, 140,286.00 and 63,985.96

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Solution

The fourth proportional to 101,690.92, 140,286.00 and 63,985.96 is: 88,270.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,690.92 : 140,286.00 = 63,985.96 : x
  2. Step 2: Convert to fraction form
    101,690.92/140,286.00 = 63,985.96/x
  3. Step 3: Cross multiply
    101,690.92x = 140,286.00 × 63,985.96
  4. Step 4: Simplify right side
    101,690.92x = 8,976,334,273.79
  5. Step 5: Solve for x
    x = 8,976,334,273.79/101,690.92
  6. Step 6: Final answer
    x = 88,270.76

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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.