Home / 115,716.71-159,680.76-64,726.76

Finding the Fourth Proportional to 115,716.71, 159,680.76 and 64,726.76

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Solution

The fourth proportional to 115,716.71, 159,680.76 and 64,726.76 is: 89,318.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,716.71 : 159,680.76 = 64,726.76 : x
  2. Step 2: Convert to fraction form
    115,716.71/159,680.76 = 64,726.76/x
  3. Step 3: Cross multiply
    115,716.71x = 159,680.76 × 64,726.76
  4. Step 4: Simplify right side
    115,716.71x = 10,335,618,229.14
  5. Step 5: Solve for x
    x = 10,335,618,229.14/115,716.71
  6. Step 6: Final answer
    x = 89,318.29

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1.5x scale

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.