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Finding the Fourth Proportional to 159,613.68, 220,266 and 87,993.44

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Solution

The fourth proportional to 159,613.68, 220,266 and 87,993.44 is: 121,430.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,613.68 : 220,266 = 87,993.44 : x
  2. Step 2: Convert to fraction form
    159,613.68/220,266 = 87,993.44/x
  3. Step 3: Cross multiply
    159,613.68x = 220,266 × 87,993.44
  4. Step 4: Simplify right side
    159,613.68x = 19,381,963,055.04
  5. Step 5: Solve for x
    x = 19,381,963,055.04/159,613.68
  6. Step 6: Final answer
    x = 121,430.46

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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.