Home / 96,781.10-144,998.85-81,920.30

Finding the Fourth Proportional to 96,781.10, 144,998.85 and 81,920.30

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Solution

The fourth proportional to 96,781.10, 144,998.85 and 81,920.30 is: 122,734.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,781.10 : 144,998.85 = 81,920.30 : x
  2. Step 2: Convert to fraction form
    96,781.10/144,998.85 = 81,920.30/x
  3. Step 3: Cross multiply
    96,781.10x = 144,998.85 × 81,920.30
  4. Step 4: Simplify right side
    96,781.10x = 11,878,349,291.66
  5. Step 5: Solve for x
    x = 11,878,349,291.66/96,781.10
  6. Step 6: Final answer
    x = 122,734.18

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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.