Home / 131,451.20-197,176.80-78,833.60

Finding the Fourth Proportional to 131,451.20, 197,176.80 and 78,833.60

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Solution

The fourth proportional to 131,451.20, 197,176.80 and 78,833.60 is: 118,250.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,451.20 : 197,176.80 = 78,833.60 : x
  2. Step 2: Convert to fraction form
    131,451.20/197,176.80 = 78,833.60/x
  3. Step 3: Cross multiply
    131,451.20x = 197,176.80 × 78,833.60
  4. Step 4: Simplify right side
    131,451.20x = 15,544,156,980.48
  5. Step 5: Solve for x
    x = 15,544,156,980.48/131,451.20
  6. Step 6: Final answer
    x = 118,250.40

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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.