Home / 143,831.81-198,464.19-83,377.69

Finding the Fourth Proportional to 143,831.81, 198,464.19 and 83,377.69

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Solution

The fourth proportional to 143,831.81, 198,464.19 and 83,377.69 is: 115,047.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,831.81 : 198,464.19 = 83,377.69 : x
  2. Step 2: Convert to fraction form
    143,831.81/198,464.19 = 83,377.69/x
  3. Step 3: Cross multiply
    143,831.81x = 198,464.19 × 83,377.69
  4. Step 4: Simplify right side
    143,831.81x = 16,547,485,709.92
  5. Step 5: Solve for x
    x = 16,547,485,709.92/143,831.81
  6. Step 6: Final answer
    x = 115,047.47

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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.