Home / 107,222.85-147,974.31-61,909.20

Finding the Fourth Proportional to 107,222.85, 147,974.31 and 61,909.20

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Solution

The fourth proportional to 107,222.85, 147,974.31 and 61,909.20 is: 85,438.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,222.85 : 147,974.31 = 61,909.20 : x
  2. Step 2: Convert to fraction form
    107,222.85/147,974.31 = 61,909.20/x
  3. Step 3: Cross multiply
    107,222.85x = 147,974.31 × 61,909.20
  4. Step 4: Simplify right side
    107,222.85x = 9,160,971,152.65
  5. Step 5: Solve for x
    x = 9,160,971,152.65/107,222.85
  6. Step 6: Final answer
    x = 85,438.61

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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.