Home / 154,945.32-213,831.54-121,353

Finding the Fourth Proportional to 154,945.32, 213,831.54 and 121,353

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Solution

The fourth proportional to 154,945.32, 213,831.54 and 121,353 is: 167,472.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,945.32 : 213,831.54 = 121,353 : x
  2. Step 2: Convert to fraction form
    154,945.32/213,831.54 = 121,353/x
  3. Step 3: Cross multiply
    154,945.32x = 213,831.54 × 121,353
  4. Step 4: Simplify right side
    154,945.32x = 25,949,098,873.62
  5. Step 5: Solve for x
    x = 25,949,098,873.62/154,945.32
  6. Step 6: Final answer
    x = 167,472.62

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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.