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Finding the Fourth Proportional to 112,026.80, 168,040.20 and 72,628.40

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Solution

The fourth proportional to 112,026.80, 168,040.20 and 72,628.40 is: 108,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,026.80 : 168,040.20 = 72,628.40 : x
  2. Step 2: Convert to fraction form
    112,026.80/168,040.20 = 72,628.40/x
  3. Step 3: Cross multiply
    112,026.80x = 168,040.20 × 72,628.40
  4. Step 4: Simplify right side
    112,026.80x = 12,204,490,861.68
  5. Step 5: Solve for x
    x = 12,204,490,861.68/112,026.80
  6. Step 6: Final answer
    x = 108,942.60

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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.