Home / 131,431.64-181,375.47-74,843.03

Finding the Fourth Proportional to 131,431.64, 181,375.47 and 74,843.03

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Solution

The fourth proportional to 131,431.64, 181,375.47 and 74,843.03 is: 103,283.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,431.64 : 181,375.47 = 74,843.03 : x
  2. Step 2: Convert to fraction form
    131,431.64/181,375.47 = 74,843.03/x
  3. Step 3: Cross multiply
    131,431.64x = 181,375.47 × 74,843.03
  4. Step 4: Simplify right side
    131,431.64x = 13,574,689,742.47
  5. Step 5: Solve for x
    x = 13,574,689,742.47/131,431.64
  6. Step 6: Final answer
    x = 103,283.27

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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.