Home / 137,587.06-189,853.23-80,987.50

Finding the Fourth Proportional to 137,587.06, 189,853.23 and 80,987.50

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Solution

The fourth proportional to 137,587.06, 189,853.23 and 80,987.50 is: 111,752.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,587.06 : 189,853.23 = 80,987.50 : x
  2. Step 2: Convert to fraction form
    137,587.06/189,853.23 = 80,987.50/x
  3. Step 3: Cross multiply
    137,587.06x = 189,853.23 × 80,987.50
  4. Step 4: Simplify right side
    137,587.06x = 15,375,738,464.63
  5. Step 5: Solve for x
    x = 15,375,738,464.63/137,587.06
  6. Step 6: Final answer
    x = 111,752.79

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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.