Home / 109,661.30-164,686.35-84,761.90

Finding the Fourth Proportional to 109,661.30, 164,686.35 and 84,761.90

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Solution

The fourth proportional to 109,661.30, 164,686.35 and 84,761.90 is: 127,293.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,661.30 : 164,686.35 = 84,761.90 : x
  2. Step 2: Convert to fraction form
    109,661.30/164,686.35 = 84,761.90/x
  3. Step 3: Cross multiply
    109,661.30x = 164,686.35 × 84,761.90
  4. Step 4: Simplify right side
    109,661.30x = 13,959,127,930.07
  5. Step 5: Solve for x
    x = 13,959,127,930.07/109,661.30
  6. Step 6: Final answer
    x = 127,293.11

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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.