Home / 112,471.20-168,771.60-42,400.80

Finding the Fourth Proportional to 112,471.20, 168,771.60 and 42,400.80

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Solution

The fourth proportional to 112,471.20, 168,771.60 and 42,400.80 is: 63,625.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,471.20 : 168,771.60 = 42,400.80 : x
  2. Step 2: Convert to fraction form
    112,471.20/168,771.60 = 42,400.80/x
  3. Step 3: Cross multiply
    112,471.20x = 168,771.60 × 42,400.80
  4. Step 4: Simplify right side
    112,471.20x = 7,156,050,857.28
  5. Step 5: Solve for x
    x = 7,156,050,857.28/112,471.20
  6. Step 6: Final answer
    x = 63,625.63

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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.