Home / 138,290.24-190,842.96-81,701.48

Finding the Fourth Proportional to 138,290.24, 190,842.96 and 81,701.48

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Solution

The fourth proportional to 138,290.24, 190,842.96 and 81,701.48 is: 112,749.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,290.24 : 190,842.96 = 81,701.48 : x
  2. Step 2: Convert to fraction form
    138,290.24/190,842.96 = 81,701.48/x
  3. Step 3: Cross multiply
    138,290.24x = 190,842.96 × 81,701.48
  4. Step 4: Simplify right side
    138,290.24x = 15,592,152,279.58
  5. Step 5: Solve for x
    x = 15,592,152,279.58/138,290.24
  6. Step 6: Final answer
    x = 112,749.48

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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.