Home / 109,443.26-151,029.68-61,696.64

Finding the Fourth Proportional to 109,443.26, 151,029.68 and 61,696.64

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Solution

The fourth proportional to 109,443.26, 151,029.68 and 61,696.64 is: 85,140.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,443.26 : 151,029.68 = 61,696.64 : x
  2. Step 2: Convert to fraction form
    109,443.26/151,029.68 = 61,696.64/x
  3. Step 3: Cross multiply
    109,443.26x = 151,029.68 × 61,696.64
  4. Step 4: Simplify right side
    109,443.26x = 9,318,023,865.37
  5. Step 5: Solve for x
    x = 9,318,023,865.37/109,443.26
  6. Step 6: Final answer
    x = 85,140.22

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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.