Home / 109,769.40-164,661.30-30,886.20

Finding the Fourth Proportional to 109,769.40, 164,661.30 and 30,886.20

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Solution

The fourth proportional to 109,769.40, 164,661.30 and 30,886.20 is: 46,331.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,769.40 : 164,661.30 = 30,886.20 : x
  2. Step 2: Convert to fraction form
    109,769.40/164,661.30 = 30,886.20/x
  3. Step 3: Cross multiply
    109,769.40x = 164,661.30 × 30,886.20
  4. Step 4: Simplify right side
    109,769.40x = 5,085,761,844.06
  5. Step 5: Solve for x
    x = 5,085,761,844.06/109,769.40
  6. Step 6: Final answer
    x = 46,331.33

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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.