Home / 131,115.70-196,673.55-78,498.10

Finding the Fourth Proportional to 131,115.70, 196,673.55 and 78,498.10

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Solution

The fourth proportional to 131,115.70, 196,673.55 and 78,498.10 is: 117,747.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,115.70 : 196,673.55 = 78,498.10 : x
  2. Step 2: Convert to fraction form
    131,115.70/196,673.55 = 78,498.10/x
  3. Step 3: Cross multiply
    131,115.70x = 196,673.55 × 78,498.10
  4. Step 4: Simplify right side
    131,115.70x = 15,438,499,995.26
  5. Step 5: Solve for x
    x = 15,438,499,995.26/131,115.70
  6. Step 6: Final answer
    x = 117,747.15

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1.5x scale

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.