Home / 115,212.78-172,818.90-45,042.75

Finding the Fourth Proportional to 115,212.78, 172,818.90 and 45,042.75

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Solution

The fourth proportional to 115,212.78, 172,818.90 and 45,042.75 is: 67,564.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,212.78 : 172,818.90 = 45,042.75 : x
  2. Step 2: Convert to fraction form
    115,212.78/172,818.90 = 45,042.75/x
  3. Step 3: Cross multiply
    115,212.78x = 172,818.90 × 45,042.75
  4. Step 4: Simplify right side
    115,212.78x = 7,784,238,507.98
  5. Step 5: Solve for x
    x = 7,784,238,507.98/115,212.78
  6. Step 6: Final answer
    x = 67,564.02

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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.