Home / 228,076.55-342,115.73-78,360

Finding the Fourth Proportional to 228,076.55, 342,115.73 and 78,360

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Solution

The fourth proportional to 228,076.55, 342,115.73 and 78,360 is: 117,540.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,076.55 : 342,115.73 = 78,360 : x
  2. Step 2: Convert to fraction form
    228,076.55/342,115.73 = 78,360/x
  3. Step 3: Cross multiply
    228,076.55x = 342,115.73 × 78,360
  4. Step 4: Simplify right side
    228,076.55x = 26,808,188,602.80
  5. Step 5: Solve for x
    x = 26,808,188,602.80/228,076.55
  6. Step 6: Final answer
    x = 117,540.31

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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.