Home / 138,405.44-190,999.51-74,743.24

Finding the Fourth Proportional to 138,405.44, 190,999.51 and 74,743.24

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Solution

The fourth proportional to 138,405.44, 190,999.51 and 74,743.24 is: 103,145.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,405.44 : 190,999.51 = 74,743.24 : x
  2. Step 2: Convert to fraction form
    138,405.44/190,999.51 = 74,743.24/x
  3. Step 3: Cross multiply
    138,405.44x = 190,999.51 × 74,743.24
  4. Step 4: Simplify right side
    138,405.44x = 14,275,921,354.24
  5. Step 5: Solve for x
    x = 14,275,921,354.24/138,405.44
  6. Step 6: Final answer
    x = 103,145.66

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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.