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Finding the Fourth Proportional to 158,234.49, 218,363.58 and 86,614.56

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Solution

The fourth proportional to 158,234.49, 218,363.58 and 86,614.56 is: 119,528.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,234.49 : 218,363.58 = 86,614.56 : x
  2. Step 2: Convert to fraction form
    158,234.49/218,363.58 = 86,614.56/x
  3. Step 3: Cross multiply
    158,234.49x = 218,363.58 × 86,614.56
  4. Step 4: Simplify right side
    158,234.49x = 18,913,465,401.72
  5. Step 5: Solve for x
    x = 18,913,465,401.72/158,234.49
  6. Step 6: Final answer
    x = 119,528.08

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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.