Home / 131,661.19-181,687.94-75,090.79

Finding the Fourth Proportional to 131,661.19, 181,687.94 and 75,090.79

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Solution

The fourth proportional to 131,661.19, 181,687.94 and 75,090.79 is: 103,622.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,661.19 : 181,687.94 = 75,090.79 : x
  2. Step 2: Convert to fraction form
    131,661.19/181,687.94 = 75,090.79/x
  3. Step 3: Cross multiply
    131,661.19x = 181,687.94 × 75,090.79
  4. Step 4: Simplify right side
    131,661.19x = 13,643,090,948.07
  5. Step 5: Solve for x
    x = 13,643,090,948.07/131,661.19
  6. Step 6: Final answer
    x = 103,622.72

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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.