Home / 105,245.97-145,239.55-57,500.11

Finding the Fourth Proportional to 105,245.97, 145,239.55 and 57,500.11

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Solution

The fourth proportional to 105,245.97, 145,239.55 and 57,500.11 is: 79,350.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,245.97 : 145,239.55 = 57,500.11 : x
  2. Step 2: Convert to fraction form
    105,245.97/145,239.55 = 57,500.11/x
  3. Step 3: Cross multiply
    105,245.97x = 145,239.55 × 57,500.11
  4. Step 4: Simplify right side
    105,245.97x = 8,351,290,139.15
  5. Step 5: Solve for x
    x = 8,351,290,139.15/105,245.97
  6. Step 6: Final answer
    x = 79,350.22

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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.