Home / 109,531.30-151,168.80-61,789.09

Finding the Fourth Proportional to 109,531.30, 151,168.80 and 61,789.09

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Solution

The fourth proportional to 109,531.30, 151,168.80 and 61,789.09 is: 85,277.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,531.30 : 151,168.80 = 61,789.09 : x
  2. Step 2: Convert to fraction form
    109,531.30/151,168.80 = 61,789.09/x
  3. Step 3: Cross multiply
    109,531.30x = 151,168.80 × 61,789.09
  4. Step 4: Simplify right side
    109,531.30x = 9,340,582,588.39
  5. Step 5: Solve for x
    x = 9,340,582,588.39/109,531.30
  6. Step 6: Final answer
    x = 85,277.75

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1.5x scale

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.