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Finding the Fourth Proportional to 161,472, 222,831.36 and 90,816

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Solution

The fourth proportional to 161,472, 222,831.36 and 90,816 is: 125,326.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,472 : 222,831.36 = 90,816 : x
  2. Step 2: Convert to fraction form
    161,472/222,831.36 = 90,816/x
  3. Step 3: Cross multiply
    161,472x = 222,831.36 × 90,816
  4. Step 4: Simplify right side
    161,472x = 20,236,652,789.76
  5. Step 5: Solve for x
    x = 20,236,652,789.76/161,472
  6. Step 6: Final answer
    x = 125,326.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.