Home / 120,799.80-180,841.30-89,772.60

Finding the Fourth Proportional to 120,799.80, 180,841.30 and 89,772.60

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Solution

The fourth proportional to 120,799.80, 180,841.30 and 89,772.60 is: 134,392.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,799.80 : 180,841.30 = 89,772.60 : x
  2. Step 2: Convert to fraction form
    120,799.80/180,841.30 = 89,772.60/x
  3. Step 3: Cross multiply
    120,799.80x = 180,841.30 × 89,772.60
  4. Step 4: Simplify right side
    120,799.80x = 16,234,593,688.38
  5. Step 5: Solve for x
    x = 16,234,593,688.38/120,799.80
  6. Step 6: Final answer
    x = 134,392.55

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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.