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Finding the Fourth Proportional to 159,519.03, 220,146.06 and 87,899.03

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Solution

The fourth proportional to 159,519.03, 220,146.06 and 87,899.03 is: 121,306.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,519.03 : 220,146.06 = 87,899.03 : x
  2. Step 2: Convert to fraction form
    159,519.03/220,146.06 = 87,899.03/x
  3. Step 3: Cross multiply
    159,519.03x = 220,146.06 × 87,899.03
  4. Step 4: Simplify right side
    159,519.03x = 19,350,625,132.32
  5. Step 5: Solve for x
    x = 19,350,625,132.32/159,519.03
  6. Step 6: Final answer
    x = 121,306.06

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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.