Home / 142,831.22-197,113.30-79,169.06

Finding the Fourth Proportional to 142,831.22, 197,113.30 and 79,169.06

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Solution

The fourth proportional to 142,831.22, 197,113.30 and 79,169.06 is: 109,256.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,831.22 : 197,113.30 = 79,169.06 : x
  2. Step 2: Convert to fraction form
    142,831.22/197,113.30 = 79,169.06/x
  3. Step 3: Cross multiply
    142,831.22x = 197,113.30 × 79,169.06
  4. Step 4: Simplify right side
    142,831.22x = 15,605,274,969.36
  5. Step 5: Solve for x
    x = 15,605,274,969.36/142,831.22
  6. Step 6: Final answer
    x = 109,256.75

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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.