Home / 115,726.19-159,701.29-64,738.71

Finding the Fourth Proportional to 115,726.19, 159,701.29 and 64,738.71

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Solution

The fourth proportional to 115,726.19, 159,701.29 and 64,738.71 is: 89,338.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,726.19 : 159,701.29 = 64,738.71 : x
  2. Step 2: Convert to fraction form
    115,726.19/159,701.29 = 64,738.71/x
  3. Step 3: Cross multiply
    115,726.19x = 159,701.29 × 64,738.71
  4. Step 4: Simplify right side
    115,726.19x = 10,338,855,338.09
  5. Step 5: Solve for x
    x = 10,338,855,338.09/115,726.19
  6. Step 6: Final answer
    x = 89,338.95

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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.