Home / 115,799.40-159,806.04-64,811.72

Finding the Fourth Proportional to 115,799.40, 159,806.04 and 64,811.72

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Solution

The fourth proportional to 115,799.40, 159,806.04 and 64,811.72 is: 89,441.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,799.40 : 159,806.04 = 64,811.72 : x
  2. Step 2: Convert to fraction form
    115,799.40/159,806.04 = 64,811.72/x
  3. Step 3: Cross multiply
    115,799.40x = 159,806.04 × 64,811.72
  4. Step 4: Simplify right side
    115,799.40x = 10,357,304,318.79
  5. Step 5: Solve for x
    x = 10,357,304,318.79/115,799.40
  6. Step 6: Final answer
    x = 89,441.78

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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.