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Finding the Fourth Proportional to 180,139.74, 270,168.48 and 67,831.80

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Solution

The fourth proportional to 180,139.74, 270,168.48 and 67,831.80 is: 101,732.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,139.74 : 270,168.48 = 67,831.80 : x
  2. Step 2: Convert to fraction form
    180,139.74/270,168.48 = 67,831.80/x
  3. Step 3: Cross multiply
    180,139.74x = 270,168.48 × 67,831.80
  4. Step 4: Simplify right side
    180,139.74x = 18,326,014,301.66
  5. Step 5: Solve for x
    x = 18,326,014,301.66/180,139.74
  6. Step 6: Final answer
    x = 101,732.21

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1.5x scale

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.