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Finding the Fourth Proportional to 83,940.66, 125,911.05 and 80,296.26

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Solution

The fourth proportional to 83,940.66, 125,911.05 and 80,296.26 is: 120,444.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,940.66 : 125,911.05 = 80,296.26 : x
  2. Step 2: Convert to fraction form
    83,940.66/125,911.05 = 80,296.26/x
  3. Step 3: Cross multiply
    83,940.66x = 125,911.05 × 80,296.26
  4. Step 4: Simplify right side
    83,940.66x = 10,110,186,407.67
  5. Step 5: Solve for x
    x = 10,110,186,407.67/83,940.66
  6. Step 6: Final answer
    x = 120,444.45

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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.