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Finding the Fourth Proportional to 159,642.42, 220,290.96 and 98,379.08

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Solution

The fourth proportional to 159,642.42, 220,290.96 and 98,379.08 is: 135,753.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,642.42 : 220,290.96 = 98,379.08 : x
  2. Step 2: Convert to fraction form
    159,642.42/220,290.96 = 98,379.08/x
  3. Step 3: Cross multiply
    159,642.42x = 220,290.96 × 98,379.08
  4. Step 4: Simplify right side
    159,642.42x = 21,672,021,977.12
  5. Step 5: Solve for x
    x = 21,672,021,977.12/159,642.42
  6. Step 6: Final answer
    x = 135,753.53

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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.