Home / 159,966.12-240,096.78-81,135.70

Finding the Fourth Proportional to 159,966.12, 240,096.78 and 81,135.70

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Solution

The fourth proportional to 159,966.12, 240,096.78 and 81,135.70 is: 121,778.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,966.12 : 240,096.78 = 81,135.70 : x
  2. Step 2: Convert to fraction form
    159,966.12/240,096.78 = 81,135.70/x
  3. Step 3: Cross multiply
    159,966.12x = 240,096.78 × 81,135.70
  4. Step 4: Simplify right side
    159,966.12x = 19,480,420,313.05
  5. Step 5: Solve for x
    x = 19,480,420,313.05/159,966.12
  6. Step 6: Final answer
    x = 121,778.41

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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.