Home / 133,213.07-183,831.86-72,782.41

Finding the Fourth Proportional to 133,213.07, 183,831.86 and 72,782.41

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Solution

The fourth proportional to 133,213.07, 183,831.86 and 72,782.41 is: 100,438.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,213.07 : 183,831.86 = 72,782.41 : x
  2. Step 2: Convert to fraction form
    133,213.07/183,831.86 = 72,782.41/x
  3. Step 3: Cross multiply
    133,213.07x = 183,831.86 × 72,782.41
  4. Step 4: Simplify right side
    133,213.07x = 13,379,725,278.94
  5. Step 5: Solve for x
    x = 13,379,725,278.94/133,213.07
  6. Step 6: Final answer
    x = 100,438.54

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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.