Home / 126,743.17-174,835.51-81,427.90

Finding the Fourth Proportional to 126,743.17, 174,835.51 and 81,427.90

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Solution

The fourth proportional to 126,743.17, 174,835.51 and 81,427.90 is: 112,325.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,743.17 : 174,835.51 = 81,427.90 : x
  2. Step 2: Convert to fraction form
    126,743.17/174,835.51 = 81,427.90/x
  3. Step 3: Cross multiply
    126,743.17x = 174,835.51 × 81,427.90
  4. Step 4: Simplify right side
    126,743.17x = 14,236,488,424.73
  5. Step 5: Solve for x
    x = 14,236,488,424.73/126,743.17
  6. Step 6: Final answer
    x = 112,325.49

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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.