Home / 131,225.28-181,098.72-99,343.68

Finding the Fourth Proportional to 131,225.28, 181,098.72 and 99,343.68

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Solution

The fourth proportional to 131,225.28, 181,098.72 and 99,343.68 is: 137,100.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,225.28 : 181,098.72 = 99,343.68 : x
  2. Step 2: Convert to fraction form
    131,225.28/181,098.72 = 99,343.68/x
  3. Step 3: Cross multiply
    131,225.28x = 181,098.72 × 99,343.68
  4. Step 4: Simplify right side
    131,225.28x = 17,991,013,288.09
  5. Step 5: Solve for x
    x = 17,991,013,288.09/131,225.28
  6. Step 6: Final answer
    x = 137,100.21

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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.