Home / 160,789.18-221,989.40-103,527.78

Finding the Fourth Proportional to 160,789.18, 221,989.40 and 103,527.78

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Solution

The fourth proportional to 160,789.18, 221,989.40 and 103,527.78 is: 142,932.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,789.18 : 221,989.40 = 103,527.78 : x
  2. Step 2: Convert to fraction form
    160,789.18/221,989.40 = 103,527.78/x
  3. Step 3: Cross multiply
    160,789.18x = 221,989.40 × 103,527.78
  4. Step 4: Simplify right side
    160,789.18x = 22,982,069,765.53
  5. Step 5: Solve for x
    x = 22,982,069,765.53/160,789.18
  6. Step 6: Final answer
    x = 142,932.94

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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.