Home / 146,112.90-219,176.55-76,128.90

Finding the Fourth Proportional to 146,112.90, 219,176.55 and 76,128.90

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Solution

The fourth proportional to 146,112.90, 219,176.55 and 76,128.90 is: 114,197.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,112.90 : 219,176.55 = 76,128.90 : x
  2. Step 2: Convert to fraction form
    146,112.90/219,176.55 = 76,128.90/x
  3. Step 3: Cross multiply
    146,112.90x = 219,176.55 × 76,128.90
  4. Step 4: Simplify right side
    146,112.90x = 16,685,669,657.30
  5. Step 5: Solve for x
    x = 16,685,669,657.30/146,112.90
  6. Step 6: Final answer
    x = 114,197.10

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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.