Home / 165,825.28-228,831.36-90,371.20

Finding the Fourth Proportional to 165,825.28, 228,831.36 and 90,371.20

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Solution

The fourth proportional to 165,825.28, 228,831.36 and 90,371.20 is: 124,708.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,825.28 : 228,831.36 = 90,371.20 : x
  2. Step 2: Convert to fraction form
    165,825.28/228,831.36 = 90,371.20/x
  3. Step 3: Cross multiply
    165,825.28x = 228,831.36 × 90,371.20
  4. Step 4: Simplify right side
    165,825.28x = 20,679,764,600.83
  5. Step 5: Solve for x
    x = 20,679,764,600.83/165,825.28
  6. Step 6: Final answer
    x = 124,708.15

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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.