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Finding the Fourth Proportional to 126,893.08, 175,033.16 and 81,630

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Solution

The fourth proportional to 126,893.08, 175,033.16 and 81,630 is: 112,598.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,893.08 : 175,033.16 = 81,630 : x
  2. Step 2: Convert to fraction form
    126,893.08/175,033.16 = 81,630/x
  3. Step 3: Cross multiply
    126,893.08x = 175,033.16 × 81,630
  4. Step 4: Simplify right side
    126,893.08x = 14,287,956,850.80
  5. Step 5: Solve for x
    x = 14,287,956,850.80/126,893.08
  6. Step 6: Final answer
    x = 112,598.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.