Home / 109,390.47-164,084.07-66,708.44

Finding the Fourth Proportional to 109,390.47, 164,084.07 and 66,708.44

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Solution

The fourth proportional to 109,390.47, 164,084.07 and 66,708.44 is: 100,061.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,390.47 : 164,084.07 = 66,708.44 : x
  2. Step 2: Convert to fraction form
    109,390.47/164,084.07 = 66,708.44/x
  3. Step 3: Cross multiply
    109,390.47x = 164,084.07 × 66,708.44
  4. Step 4: Simplify right side
    109,390.47x = 10,945,791,664.14
  5. Step 5: Solve for x
    x = 10,945,791,664.14/109,390.47
  6. Step 6: Final answer
    x = 100,061.66

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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.