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Finding the Fourth Proportional to 112,022.60, 168,033.90 and 84,374.60

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Solution

The fourth proportional to 112,022.60, 168,033.90 and 84,374.60 is: 126,561.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,022.60 : 168,033.90 = 84,374.60 : x
  2. Step 2: Convert to fraction form
    112,022.60/168,033.90 = 84,374.60/x
  3. Step 3: Cross multiply
    112,022.60x = 168,033.90 × 84,374.60
  4. Step 4: Simplify right side
    112,022.60x = 14,177,793,098.94
  5. Step 5: Solve for x
    x = 14,177,793,098.94/112,022.60
  6. Step 6: Final answer
    x = 126,561.90

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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.