Home / 137,821.16-190,195.18-77,404.84

Finding the Fourth Proportional to 137,821.16, 190,195.18 and 77,404.84

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Solution

The fourth proportional to 137,821.16, 190,195.18 and 77,404.84 is: 106,819.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,821.16 : 190,195.18 = 77,404.84 : x
  2. Step 2: Convert to fraction form
    137,821.16/190,195.18 = 77,404.84/x
  3. Step 3: Cross multiply
    137,821.16x = 190,195.18 × 77,404.84
  4. Step 4: Simplify right side
    137,821.16x = 14,722,027,476.67
  5. Step 5: Solve for x
    x = 14,722,027,476.67/137,821.16
  6. Step 6: Final answer
    x = 106,819.79

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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.