Home / 454,081.80-681,122.70-138,538.20

Finding the Fourth Proportional to 454,081.80, 681,122.70 and 138,538.20

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Solution

The fourth proportional to 454,081.80, 681,122.70 and 138,538.20 is: 207,807.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,081.80 : 681,122.70 = 138,538.20 : x
  2. Step 2: Convert to fraction form
    454,081.80/681,122.70 = 138,538.20/x
  3. Step 3: Cross multiply
    454,081.80x = 681,122.70 × 138,538.20
  4. Step 4: Simplify right side
    454,081.80x = 94,361,512,837.14
  5. Step 5: Solve for x
    x = 94,361,512,837.14/454,081.80
  6. Step 6: Final answer
    x = 207,807.30

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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.