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Finding the Fourth Proportional to 112,513.20, 168,721.20 and 56,331.60

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Solution

The fourth proportional to 112,513.20, 168,721.20 and 56,331.60 is: 84,473.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,513.20 : 168,721.20 = 56,331.60 : x
  2. Step 2: Convert to fraction form
    112,513.20/168,721.20 = 56,331.60/x
  3. Step 3: Cross multiply
    112,513.20x = 168,721.20 × 56,331.60
  4. Step 4: Simplify right side
    112,513.20x = 9,504,335,149.92
  5. Step 5: Solve for x
    x = 9,504,335,149.92/112,513.20
  6. Step 6: Final answer
    x = 84,473.07

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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.