Home / 131,794.56-181,869.12-78,084.72

Finding the Fourth Proportional to 131,794.56, 181,869.12 and 78,084.72

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Solution

The fourth proportional to 131,794.56, 181,869.12 and 78,084.72 is: 107,752.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,794.56 : 181,869.12 = 78,084.72 : x
  2. Step 2: Convert to fraction form
    131,794.56/181,869.12 = 78,084.72/x
  3. Step 3: Cross multiply
    131,794.56x = 181,869.12 × 78,084.72
  4. Step 4: Simplify right side
    131,794.56x = 14,201,199,311.85
  5. Step 5: Solve for x
    x = 14,201,199,311.85/131,794.56
  6. Step 6: Final answer
    x = 107,752.55

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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.