Home / 147,831.28-204,007.80-80,764.72

Finding the Fourth Proportional to 147,831.28, 204,007.80 and 80,764.72

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Solution

The fourth proportional to 147,831.28, 204,007.80 and 80,764.72 is: 111,455.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,831.28 : 204,007.80 = 80,764.72 : x
  2. Step 2: Convert to fraction form
    147,831.28/204,007.80 = 80,764.72/x
  3. Step 3: Cross multiply
    147,831.28x = 204,007.80 × 80,764.72
  4. Step 4: Simplify right side
    147,831.28x = 16,476,632,844.82
  5. Step 5: Solve for x
    x = 16,476,632,844.82/147,831.28
  6. Step 6: Final answer
    x = 111,455.66

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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.