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Finding the Fourth Proportional to 361,768, 542,698.08 and 99,112

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Solution

The fourth proportional to 361,768, 542,698.08 and 99,112 is: 148,680.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,768 : 542,698.08 = 99,112 : x
  2. Step 2: Convert to fraction form
    361,768/542,698.08 = 99,112/x
  3. Step 3: Cross multiply
    361,768x = 542,698.08 × 99,112
  4. Step 4: Simplify right side
    361,768x = 53,787,892,104.96
  5. Step 5: Solve for x
    x = 53,787,892,104.96/361,768
  6. Step 6: Final answer
    x = 148,680.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.