Home / 124,867.53-172,169.96-100,920.15

Finding the Fourth Proportional to 124,867.53, 172,169.96 and 100,920.15

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Solution

The fourth proportional to 124,867.53, 172,169.96 and 100,920.15 is: 139,150.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,867.53 : 172,169.96 = 100,920.15 : x
  2. Step 2: Convert to fraction form
    124,867.53/172,169.96 = 100,920.15/x
  3. Step 3: Cross multiply
    124,867.53x = 172,169.96 × 100,920.15
  4. Step 4: Simplify right side
    124,867.53x = 17,375,417,684.09
  5. Step 5: Solve for x
    x = 17,375,417,684.09/124,867.53
  6. Step 6: Final answer
    x = 139,150.81

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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.