Home / 136,291.12-188,080.28-75,860.80

Finding the Fourth Proportional to 136,291.12, 188,080.28 and 75,860.80

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Solution

The fourth proportional to 136,291.12, 188,080.28 and 75,860.80 is: 104,687.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,291.12 : 188,080.28 = 75,860.80 : x
  2. Step 2: Convert to fraction form
    136,291.12/188,080.28 = 75,860.80/x
  3. Step 3: Cross multiply
    136,291.12x = 188,080.28 × 75,860.80
  4. Step 4: Simplify right side
    136,291.12x = 14,267,920,505.02
  5. Step 5: Solve for x
    x = 14,267,920,505.02/136,291.12
  6. Step 6: Final answer
    x = 104,687.09

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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.