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Finding the Fourth Proportional to 158,654.96, 218,929.90 and 90,658.44

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Solution

The fourth proportional to 158,654.96, 218,929.90 and 90,658.44 is: 125,100.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,654.96 : 218,929.90 = 90,658.44 : x
  2. Step 2: Convert to fraction form
    158,654.96/218,929.90 = 90,658.44/x
  3. Step 3: Cross multiply
    158,654.96x = 218,929.90 × 90,658.44
  4. Step 4: Simplify right side
    158,654.96x = 19,847,843,203.36
  5. Step 5: Solve for x
    x = 19,847,843,203.36/158,654.96
  6. Step 6: Final answer
    x = 125,100.68

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1.5x scale

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.