Home / 140,643.40-194,080.38-76,968.88

Finding the Fourth Proportional to 140,643.40, 194,080.38 and 76,968.88

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Solution

The fourth proportional to 140,643.40, 194,080.38 and 76,968.88 is: 106,212.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,643.40 : 194,080.38 = 76,968.88 : x
  2. Step 2: Convert to fraction form
    140,643.40/194,080.38 = 76,968.88/x
  3. Step 3: Cross multiply
    140,643.40x = 194,080.38 × 76,968.88
  4. Step 4: Simplify right side
    140,643.40x = 14,938,149,478.57
  5. Step 5: Solve for x
    x = 14,938,149,478.57/140,643.40
  6. Step 6: Final answer
    x = 106,212.94

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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.