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Finding the Fourth Proportional to 158,179, 218,285.36 and 90,207.04

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Solution

The fourth proportional to 158,179, 218,285.36 and 90,207.04 is: 124,484.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,179 : 218,285.36 = 90,207.04 : x
  2. Step 2: Convert to fraction form
    158,179/218,285.36 = 90,207.04/x
  3. Step 3: Cross multiply
    158,179x = 218,285.36 × 90,207.04
  4. Step 4: Simplify right side
    158,179x = 19,690,876,200.93
  5. Step 5: Solve for x
    x = 19,690,876,200.93/158,179
  6. Step 6: Final answer
    x = 124,484.77

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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.