Home / 131,207.40-196,859.70-52,378.20

Finding the Fourth Proportional to 131,207.40, 196,859.70 and 52,378.20

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Solution

The fourth proportional to 131,207.40, 196,859.70 and 52,378.20 is: 78,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,207.40 : 196,859.70 = 52,378.20 : x
  2. Step 2: Convert to fraction form
    131,207.40/196,859.70 = 52,378.20/x
  3. Step 3: Cross multiply
    131,207.40x = 196,859.70 × 52,378.20
  4. Step 4: Simplify right side
    131,207.40x = 10,311,156,738.54
  5. Step 5: Solve for x
    x = 10,311,156,738.54/131,207.40
  6. Step 6: Final answer
    x = 78,586.70

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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.