Home / 109,306.32-164,039.40-69,959.76

Finding the Fourth Proportional to 109,306.32, 164,039.40 and 69,959.76

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Solution

The fourth proportional to 109,306.32, 164,039.40 and 69,959.76 is: 104,990.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,306.32 : 164,039.40 = 69,959.76 : x
  2. Step 2: Convert to fraction form
    109,306.32/164,039.40 = 69,959.76/x
  3. Step 3: Cross multiply
    109,306.32x = 164,039.40 × 69,959.76
  4. Step 4: Simplify right side
    109,306.32x = 11,476,157,054.54
  5. Step 5: Solve for x
    x = 11,476,157,054.54/109,306.32
  6. Step 6: Final answer
    x = 104,990.79

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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.