Home / 145,319.88-217,992.33-40,138.86

Finding the Fourth Proportional to 145,319.88, 217,992.33 and 40,138.86

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Solution

The fourth proportional to 145,319.88, 217,992.33 and 40,138.86 is: 60,211.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,319.88 : 217,992.33 = 40,138.86 : x
  2. Step 2: Convert to fraction form
    145,319.88/217,992.33 = 40,138.86/x
  3. Step 3: Cross multiply
    145,319.88x = 217,992.33 × 40,138.86
  4. Step 4: Simplify right side
    145,319.88x = 8,749,963,614.94
  5. Step 5: Solve for x
    x = 8,749,963,614.94/145,319.88
  6. Step 6: Final answer
    x = 60,211.75

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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.