Home / 143,352.21-197,831.13-78,826.36

Finding the Fourth Proportional to 143,352.21, 197,831.13 and 78,826.36

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Solution

The fourth proportional to 143,352.21, 197,831.13 and 78,826.36 is: 108,783.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,352.21 : 197,831.13 = 78,826.36 : x
  2. Step 2: Convert to fraction form
    143,352.21/197,831.13 = 78,826.36/x
  3. Step 3: Cross multiply
    143,352.21x = 197,831.13 × 78,826.36
  4. Step 4: Simplify right side
    143,352.21x = 15,594,306,489.30
  5. Step 5: Solve for x
    x = 15,594,306,489.30/143,352.21
  6. Step 6: Final answer
    x = 108,783.16

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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.