Home / 133,213.10-183,831.90-72,782.44

Finding the Fourth Proportional to 133,213.10, 183,831.90 and 72,782.44

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Solution

The fourth proportional to 133,213.10, 183,831.90 and 72,782.44 is: 100,438.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,213.10 : 183,831.90 = 72,782.44 : x
  2. Step 2: Convert to fraction form
    133,213.10/183,831.90 = 72,782.44/x
  3. Step 3: Cross multiply
    133,213.10x = 183,831.90 × 72,782.44
  4. Step 4: Simplify right side
    133,213.10x = 13,379,734,231.84
  5. Step 5: Solve for x
    x = 13,379,734,231.84/133,213.10
  6. Step 6: Final answer
    x = 100,438.58

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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.