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Finding the Fourth Proportional to 132,693.30, 199,039.95 and 80,205.30

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Solution

The fourth proportional to 132,693.30, 199,039.95 and 80,205.30 is: 120,307.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,693.30 : 199,039.95 = 80,205.30 : x
  2. Step 2: Convert to fraction form
    132,693.30/199,039.95 = 80,205.30/x
  3. Step 3: Cross multiply
    132,693.30x = 199,039.95 × 80,205.30
  4. Step 4: Simplify right side
    132,693.30x = 15,964,058,901.74
  5. Step 5: Solve for x
    x = 15,964,058,901.74/132,693.30
  6. Step 6: Final answer
    x = 120,307.95

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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.