Home / 131,972.91-181,921.07-80,890.97

Finding the Fourth Proportional to 131,972.91, 181,921.07 and 80,890.97

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Solution

The fourth proportional to 131,972.91, 181,921.07 and 80,890.97 is: 111,506.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,972.91 : 181,921.07 = 80,890.97 : x
  2. Step 2: Convert to fraction form
    131,972.91/181,921.07 = 80,890.97/x
  3. Step 3: Cross multiply
    131,972.91x = 181,921.07 × 80,890.97
  4. Step 4: Simplify right side
    131,972.91x = 14,715,771,108.36
  5. Step 5: Solve for x
    x = 14,715,771,108.36/131,972.91
  6. Step 6: Final answer
    x = 111,506.00

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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.