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Finding the Fourth Proportional to 158,626.85, 218,919.15 and 87,020.82

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Solution

The fourth proportional to 158,626.85, 218,919.15 and 87,020.82 is: 120,096.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,626.85 : 218,919.15 = 87,020.82 : x
  2. Step 2: Convert to fraction form
    158,626.85/218,919.15 = 87,020.82/x
  3. Step 3: Cross multiply
    158,626.85x = 218,919.15 × 87,020.82
  4. Step 4: Simplify right side
    158,626.85x = 19,050,523,946.70
  5. Step 5: Solve for x
    x = 19,050,523,946.70/158,626.85
  6. Step 6: Final answer
    x = 120,096.47

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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.