Home / 131,283.82-181,126.81-79,616.71

Finding the Fourth Proportional to 131,283.82, 181,126.81 and 79,616.71

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Solution

The fourth proportional to 131,283.82, 181,126.81 and 79,616.71 is: 109,843.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,283.82 : 181,126.81 = 79,616.71 : x
  2. Step 2: Convert to fraction form
    131,283.82/181,126.81 = 79,616.71/x
  3. Step 3: Cross multiply
    131,283.82x = 181,126.81 × 79,616.71
  4. Step 4: Simplify right side
    131,283.82x = 14,420,720,053.14
  5. Step 5: Solve for x
    x = 14,420,720,053.14/131,283.82
  6. Step 6: Final answer
    x = 109,843.85

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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.