Home / 127,489.40-191,034.30-80,643.32

Finding the Fourth Proportional to 127,489.40, 191,034.30 and 80,643.32

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Solution

The fourth proportional to 127,489.40, 191,034.30 and 80,643.32 is: 120,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,489.40 : 191,034.30 = 80,643.32 : x
  2. Step 2: Convert to fraction form
    127,489.40/191,034.30 = 80,643.32/x
  3. Step 3: Cross multiply
    127,489.40x = 191,034.30 × 80,643.32
  4. Step 4: Simplify right side
    127,489.40x = 15,405,640,185.88
  5. Step 5: Solve for x
    x = 15,405,640,185.88/127,489.40
  6. Step 6: Final answer
    x = 120,838.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.