Home / 131,407.26-181,278.61-86,065.28

Finding the Fourth Proportional to 131,407.26, 181,278.61 and 86,065.28

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Solution

The fourth proportional to 131,407.26, 181,278.61 and 86,065.28 is: 118,728.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,407.26 : 181,278.61 = 86,065.28 : x
  2. Step 2: Convert to fraction form
    131,407.26/181,278.61 = 86,065.28/x
  3. Step 3: Cross multiply
    131,407.26x = 181,278.61 × 86,065.28
  4. Step 4: Simplify right side
    131,407.26x = 15,601,794,905.59
  5. Step 5: Solve for x
    x = 15,601,794,905.59/131,407.26
  6. Step 6: Final answer
    x = 118,728.56

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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.