Home / 185,407.11-278,211.58-78,774.39

Finding the Fourth Proportional to 185,407.11, 278,211.58 and 78,774.39

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Solution

The fourth proportional to 185,407.11, 278,211.58 and 78,774.39 is: 118,204.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,407.11 : 278,211.58 = 78,774.39 : x
  2. Step 2: Convert to fraction form
    185,407.11/278,211.58 = 78,774.39/x
  3. Step 3: Cross multiply
    185,407.11x = 278,211.58 × 78,774.39
  4. Step 4: Simplify right side
    185,407.11x = 21,915,945,917.44
  5. Step 5: Solve for x
    x = 21,915,945,917.44/185,407.11
  6. Step 6: Final answer
    x = 118,204.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.