Home / 190,775.12-263,215.67-122,831.42

Finding the Fourth Proportional to 190,775.12, 263,215.67 and 122,831.42

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Solution

The fourth proportional to 190,775.12, 263,215.67 and 122,831.42 is: 169,472.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,775.12 : 263,215.67 = 122,831.42 : x
  2. Step 2: Convert to fraction form
    190,775.12/263,215.67 = 122,831.42/x
  3. Step 3: Cross multiply
    190,775.12x = 263,215.67 × 122,831.42
  4. Step 4: Simplify right side
    190,775.12x = 32,331,152,582.12
  5. Step 5: Solve for x
    x = 32,331,152,582.12/190,775.12
  6. Step 6: Final answer
    x = 169,472.59

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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.