Home / 131,429.79-181,376.85-73,287.87

Finding the Fourth Proportional to 131,429.79, 181,376.85 and 73,287.87

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Solution

The fourth proportional to 131,429.79, 181,376.85 and 73,287.87 is: 101,139.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,429.79 : 181,376.85 = 73,287.87 : x
  2. Step 2: Convert to fraction form
    131,429.79/181,376.85 = 73,287.87/x
  3. Step 3: Cross multiply
    131,429.79x = 181,376.85 × 73,287.87
  4. Step 4: Simplify right side
    131,429.79x = 13,292,722,096.93
  5. Step 5: Solve for x
    x = 13,292,722,096.93/131,429.79
  6. Step 6: Final answer
    x = 101,139.34

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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.