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Finding the Fourth Proportional to 158,138.56, 218,165.52 and 103,675.84

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Solution

The fourth proportional to 158,138.56, 218,165.52 and 103,675.84 is: 143,029.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,138.56 : 218,165.52 = 103,675.84 : x
  2. Step 2: Convert to fraction form
    158,138.56/218,165.52 = 103,675.84/x
  3. Step 3: Cross multiply
    158,138.56x = 218,165.52 × 103,675.84
  4. Step 4: Simplify right side
    158,138.56x = 22,618,493,545.04
  5. Step 5: Solve for x
    x = 22,618,493,545.04/158,138.56
  6. Step 6: Final answer
    x = 143,029.59

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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.