Home / 133,161.80-183,764.78-72,734.24

Finding the Fourth Proportional to 133,161.80, 183,764.78 and 72,734.24

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Solution

The fourth proportional to 133,161.80, 183,764.78 and 72,734.24 is: 100,374.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,161.80 : 183,764.78 = 72,734.24 : x
  2. Step 2: Convert to fraction form
    133,161.80/183,764.78 = 72,734.24/x
  3. Step 3: Cross multiply
    133,161.80x = 183,764.78 × 72,734.24
  4. Step 4: Simplify right side
    133,161.80x = 13,365,991,612.07
  5. Step 5: Solve for x
    x = 13,365,991,612.07/133,161.80
  6. Step 6: Final answer
    x = 100,374.07

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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.