Home / 165,474.40-248,038.78-81,117.76

Finding the Fourth Proportional to 165,474.40, 248,038.78 and 81,117.76

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Solution

The fourth proportional to 165,474.40, 248,038.78 and 81,117.76 is: 121,591.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,474.40 : 248,038.78 = 81,117.76 : x
  2. Step 2: Convert to fraction form
    165,474.40/248,038.78 = 81,117.76/x
  3. Step 3: Cross multiply
    165,474.40x = 248,038.78 × 81,117.76
  4. Step 4: Simplify right side
    165,474.40x = 20,120,350,226.73
  5. Step 5: Solve for x
    x = 20,120,350,226.73/165,474.40
  6. Step 6: Final answer
    x = 121,591.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.