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Finding the Fourth Proportional to 158,231.62, 218,355.24 and 90,247

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Solution

The fourth proportional to 158,231.62, 218,355.24 and 90,247 is: 124,538.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,231.62 : 218,355.24 = 90,247 : x
  2. Step 2: Convert to fraction form
    158,231.62/218,355.24 = 90,247/x
  3. Step 3: Cross multiply
    158,231.62x = 218,355.24 × 90,247
  4. Step 4: Simplify right side
    158,231.62x = 19,705,905,344.28
  5. Step 5: Solve for x
    x = 19,705,905,344.28/158,231.62
  6. Step 6: Final answer
    x = 124,538.35

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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.