Home / 137,821.12-190,195.14-77,404.84

Finding the Fourth Proportional to 137,821.12, 190,195.14 and 77,404.84

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Solution

The fourth proportional to 137,821.12, 190,195.14 and 77,404.84 is: 106,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,821.12 : 190,195.14 = 77,404.84 : x
  2. Step 2: Convert to fraction form
    137,821.12/190,195.14 = 77,404.84/x
  3. Step 3: Cross multiply
    137,821.12x = 190,195.14 × 77,404.84
  4. Step 4: Simplify right side
    137,821.12x = 14,722,024,380.48
  5. Step 5: Solve for x
    x = 14,722,024,380.48/137,821.12
  6. Step 6: Final answer
    x = 106,819.80

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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.