Home / 130,521.12-195,774.96-76,515.78

Finding the Fourth Proportional to 130,521.12, 195,774.96 and 76,515.78

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Solution

The fourth proportional to 130,521.12, 195,774.96 and 76,515.78 is: 114,769.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,521.12 : 195,774.96 = 76,515.78 : x
  2. Step 2: Convert to fraction form
    130,521.12/195,774.96 = 76,515.78/x
  3. Step 3: Cross multiply
    130,521.12x = 195,774.96 × 76,515.78
  4. Step 4: Simplify right side
    130,521.12x = 14,979,873,768.87
  5. Step 5: Solve for x
    x = 14,979,873,768.87/130,521.12
  6. Step 6: Final answer
    x = 114,769.73

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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.