Home / 100,918.55-139,257.11-62,150.21

Finding the Fourth Proportional to 100,918.55, 139,257.11 and 62,150.21

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Solution

The fourth proportional to 100,918.55, 139,257.11 and 62,150.21 is: 85,760.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,918.55 : 139,257.11 = 62,150.21 : x
  2. Step 2: Convert to fraction form
    100,918.55/139,257.11 = 62,150.21/x
  3. Step 3: Cross multiply
    100,918.55x = 139,257.11 × 62,150.21
  4. Step 4: Simplify right side
    100,918.55x = 8,654,857,623.46
  5. Step 5: Solve for x
    x = 8,654,857,623.46/100,918.55
  6. Step 6: Final answer
    x = 85,760.82

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1.5x scale

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.