Home / 100,213.29-138,317.10-62,480.25

Finding the Fourth Proportional to 100,213.29, 138,317.10 and 62,480.25

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Solution

The fourth proportional to 100,213.29, 138,317.10 and 62,480.25 is: 86,236.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,213.29 : 138,317.10 = 62,480.25 : x
  2. Step 2: Convert to fraction form
    100,213.29/138,317.10 = 62,480.25/x
  3. Step 3: Cross multiply
    100,213.29x = 138,317.10 × 62,480.25
  4. Step 4: Simplify right side
    100,213.29x = 8,642,086,987.28
  5. Step 5: Solve for x
    x = 8,642,086,987.28/100,213.29
  6. Step 6: Final answer
    x = 86,236.94

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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.