Home / 100,937.21-139,292.65-55,614.13

Finding the Fourth Proportional to 100,937.21, 139,292.65 and 55,614.13

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Solution

The fourth proportional to 100,937.21, 139,292.65 and 55,614.13 is: 76,747.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,937.21 : 139,292.65 = 55,614.13 : x
  2. Step 2: Convert to fraction form
    100,937.21/139,292.65 = 55,614.13/x
  3. Step 3: Cross multiply
    100,937.21x = 139,292.65 × 55,614.13
  4. Step 4: Simplify right side
    100,937.21x = 7,746,640,049.95
  5. Step 5: Solve for x
    x = 7,746,640,049.95/100,937.21
  6. Step 6: Final answer
    x = 76,747.12

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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.