Home / 89,961.20-134,855.40-69,959.60

Finding the Fourth Proportional to 89,961.20, 134,855.40 and 69,959.60

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Solution

The fourth proportional to 89,961.20, 134,855.40 and 69,959.60 is: 104,872.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,961.20 : 134,855.40 = 69,959.60 : x
  2. Step 2: Convert to fraction form
    89,961.20/134,855.40 = 69,959.60/x
  3. Step 3: Cross multiply
    89,961.20x = 134,855.40 × 69,959.60
  4. Step 4: Simplify right side
    89,961.20x = 9,434,429,841.84
  5. Step 5: Solve for x
    x = 9,434,429,841.84/89,961.20
  6. Step 6: Final answer
    x = 104,872.21

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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.