Home / 136,697.87-188,642.45-76,268.59

Finding the Fourth Proportional to 136,697.87, 188,642.45 and 76,268.59

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Solution

The fourth proportional to 136,697.87, 188,642.45 and 76,268.59 is: 105,250.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,697.87 : 188,642.45 = 76,268.59 : x
  2. Step 2: Convert to fraction form
    136,697.87/188,642.45 = 76,268.59/x
  3. Step 3: Cross multiply
    136,697.87x = 188,642.45 × 76,268.59
  4. Step 4: Simplify right side
    136,697.87x = 14,387,493,394.71
  5. Step 5: Solve for x
    x = 14,387,493,394.71/136,697.87
  6. Step 6: Final answer
    x = 105,250.31

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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.