Home / 140,782.56-194,279.96-77,122.60

Finding the Fourth Proportional to 140,782.56, 194,279.96 and 77,122.60

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Solution

The fourth proportional to 140,782.56, 194,279.96 and 77,122.60 is: 106,429.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,782.56 : 194,279.96 = 77,122.60 : x
  2. Step 2: Convert to fraction form
    140,782.56/194,279.96 = 77,122.60/x
  3. Step 3: Cross multiply
    140,782.56x = 194,279.96 × 77,122.60
  4. Step 4: Simplify right side
    140,782.56x = 14,983,375,643.10
  5. Step 5: Solve for x
    x = 14,983,375,643.10/140,782.56
  6. Step 6: Final answer
    x = 106,429.20

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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.