Home / 108,634.10-162,951.15-91,138.10

Finding the Fourth Proportional to 108,634.10, 162,951.15 and 91,138.10

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Solution

The fourth proportional to 108,634.10, 162,951.15 and 91,138.10 is: 136,707.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,634.10 : 162,951.15 = 91,138.10 : x
  2. Step 2: Convert to fraction form
    108,634.10/162,951.15 = 91,138.10/x
  3. Step 3: Cross multiply
    108,634.10x = 162,951.15 × 91,138.10
  4. Step 4: Simplify right side
    108,634.10x = 14,851,058,203.82
  5. Step 5: Solve for x
    x = 14,851,058,203.82/108,634.10
  6. Step 6: Final answer
    x = 136,707.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.