Home / 100,620.62-138,847.41-55,298.10

Finding the Fourth Proportional to 100,620.62, 138,847.41 and 55,298.10

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Solution

The fourth proportional to 100,620.62, 138,847.41 and 55,298.10 is: 76,306.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,620.62 : 138,847.41 = 55,298.10 : x
  2. Step 2: Convert to fraction form
    100,620.62/138,847.41 = 55,298.10/x
  3. Step 3: Cross multiply
    100,620.62x = 138,847.41 × 55,298.10
  4. Step 4: Simplify right side
    100,620.62x = 7,677,997,962.92
  5. Step 5: Solve for x
    x = 7,677,997,962.92/100,620.62
  6. Step 6: Final answer
    x = 76,306.41

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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.