Home / 140,778.82-194,274.70-77,116.60

Finding the Fourth Proportional to 140,778.82, 194,274.70 and 77,116.60

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Solution

The fourth proportional to 140,778.82, 194,274.70 and 77,116.60 is: 106,420.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,778.82 : 194,274.70 = 77,116.60 : x
  2. Step 2: Convert to fraction form
    140,778.82/194,274.70 = 77,116.60/x
  3. Step 3: Cross multiply
    140,778.82x = 194,274.70 × 77,116.60
  4. Step 4: Simplify right side
    140,778.82x = 14,981,804,330.02
  5. Step 5: Solve for x
    x = 14,981,804,330.02/140,778.82
  6. Step 6: Final answer
    x = 106,420.87

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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.