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Finding the Fourth Proportional to 112,195.80, 168,066.90 and 69,946.20

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Solution

The fourth proportional to 112,195.80, 168,066.90 and 69,946.20 is: 104,777.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,195.80 : 168,066.90 = 69,946.20 : x
  2. Step 2: Convert to fraction form
    112,195.80/168,066.90 = 69,946.20/x
  3. Step 3: Cross multiply
    112,195.80x = 168,066.90 × 69,946.20
  4. Step 4: Simplify right side
    112,195.80x = 11,755,641,000.78
  5. Step 5: Solve for x
    x = 11,755,641,000.78/112,195.80
  6. Step 6: Final answer
    x = 104,777.91

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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.