Home / 140,911.74-194,459.79-80,490.36

Finding the Fourth Proportional to 140,911.74, 194,459.79 and 80,490.36

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Solution

The fourth proportional to 140,911.74, 194,459.79 and 80,490.36 is: 111,077.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,911.74 : 194,459.79 = 80,490.36 : x
  2. Step 2: Convert to fraction form
    140,911.74/194,459.79 = 80,490.36/x
  3. Step 3: Cross multiply
    140,911.74x = 194,459.79 × 80,490.36
  4. Step 4: Simplify right side
    140,911.74x = 15,652,138,502.62
  5. Step 5: Solve for x
    x = 15,652,138,502.62/140,911.74
  6. Step 6: Final answer
    x = 111,077.60

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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.