Home / 99,930.12-149,851.26-53,171.88

Finding the Fourth Proportional to 99,930.12, 149,851.26 and 53,171.88

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Solution

The fourth proportional to 99,930.12, 149,851.26 and 53,171.88 is: 79,734.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,930.12 : 149,851.26 = 53,171.88 : x
  2. Step 2: Convert to fraction form
    99,930.12/149,851.26 = 53,171.88/x
  3. Step 3: Cross multiply
    99,930.12x = 149,851.26 × 53,171.88
  4. Step 4: Simplify right side
    99,930.12x = 7,967,873,214.57
  5. Step 5: Solve for x
    x = 7,967,873,214.57/99,930.12
  6. Step 6: Final answer
    x = 79,734.45

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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.