Home / 228,112.20-342,135.90-78,359.40

Finding the Fourth Proportional to 228,112.20, 342,135.90 and 78,359.40

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Solution

The fourth proportional to 228,112.20, 342,135.90 and 78,359.40 is: 117,527.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,112.20 : 342,135.90 = 78,359.40 : x
  2. Step 2: Convert to fraction form
    228,112.20/342,135.90 = 78,359.40/x
  3. Step 3: Cross multiply
    228,112.20x = 342,135.90 × 78,359.40
  4. Step 4: Simplify right side
    228,112.20x = 26,809,563,842.46
  5. Step 5: Solve for x
    x = 26,809,563,842.46/228,112.20
  6. Step 6: Final answer
    x = 117,527.97

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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.