Home / 107,870.24-148,791.44-71,570.90

Finding the Fourth Proportional to 107,870.24, 148,791.44 and 71,570.90

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Solution

The fourth proportional to 107,870.24, 148,791.44 and 71,570.90 is: 98,721.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,870.24 : 148,791.44 = 71,570.90 : x
  2. Step 2: Convert to fraction form
    107,870.24/148,791.44 = 71,570.90/x
  3. Step 3: Cross multiply
    107,870.24x = 148,791.44 × 71,570.90
  4. Step 4: Simplify right side
    107,870.24x = 10,649,137,273.10
  5. Step 5: Solve for x
    x = 10,649,137,273.10/107,870.24
  6. Step 6: Final answer
    x = 98,721.74

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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.