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Finding the Fourth Proportional to 159,878.65, 220,626.70 and 88,258.45

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Solution

The fourth proportional to 159,878.65, 220,626.70 and 88,258.45 is: 121,793.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,878.65 : 220,626.70 = 88,258.45 : x
  2. Step 2: Convert to fraction form
    159,878.65/220,626.70 = 88,258.45/x
  3. Step 3: Cross multiply
    159,878.65x = 220,626.70 × 88,258.45
  4. Step 4: Simplify right side
    159,878.65x = 19,472,170,570.62
  5. Step 5: Solve for x
    x = 19,472,170,570.62/159,878.65
  6. Step 6: Final answer
    x = 121,793.44

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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.