Home / 133,481.52-184,168.08-78,290.55

Finding the Fourth Proportional to 133,481.52, 184,168.08 and 78,290.55

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Solution

The fourth proportional to 133,481.52, 184,168.08 and 78,290.55 is: 108,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,481.52 : 184,168.08 = 78,290.55 : x
  2. Step 2: Convert to fraction form
    133,481.52/184,168.08 = 78,290.55/x
  3. Step 3: Cross multiply
    133,481.52x = 184,168.08 × 78,290.55
  4. Step 4: Simplify right side
    133,481.52x = 14,418,620,275.64
  5. Step 5: Solve for x
    x = 14,418,620,275.64/133,481.52
  6. Step 6: Final answer
    x = 108,019.60

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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.