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Finding the Fourth Proportional to 158,351.90, 218,529.17 and 90,367.52

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Solution

The fourth proportional to 158,351.90, 218,529.17 and 90,367.52 is: 124,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,351.90 : 218,529.17 = 90,367.52 : x
  2. Step 2: Convert to fraction form
    158,351.90/218,529.17 = 90,367.52/x
  3. Step 3: Cross multiply
    158,351.90x = 218,529.17 × 90,367.52
  4. Step 4: Simplify right side
    158,351.90x = 19,747,938,688.72
  5. Step 5: Solve for x
    x = 19,747,938,688.72/158,351.90
  6. Step 6: Final answer
    x = 124,709.20

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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.