Home / 124,987.20-172,481.52-68,398.40

Finding the Fourth Proportional to 124,987.20, 172,481.52 and 68,398.40

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Solution

The fourth proportional to 124,987.20, 172,481.52 and 68,398.40 is: 94,389.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,987.20 : 172,481.52 = 68,398.40 : x
  2. Step 2: Convert to fraction form
    124,987.20/172,481.52 = 68,398.40/x
  3. Step 3: Cross multiply
    124,987.20x = 172,481.52 × 68,398.40
  4. Step 4: Simplify right side
    124,987.20x = 11,797,459,997.57
  5. Step 5: Solve for x
    x = 11,797,459,997.57/124,987.20
  6. Step 6: Final answer
    x = 94,389.35

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1.5x scale

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.