Home / 145,270.72-217,900.14-40,087

Finding the Fourth Proportional to 145,270.72, 217,900.14 and 40,087

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Solution

The fourth proportional to 145,270.72, 217,900.14 and 40,087 is: 60,128.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,270.72 : 217,900.14 = 40,087 : x
  2. Step 2: Convert to fraction form
    145,270.72/217,900.14 = 40,087/x
  3. Step 3: Cross multiply
    145,270.72x = 217,900.14 × 40,087
  4. Step 4: Simplify right side
    145,270.72x = 8,734,962,912.18
  5. Step 5: Solve for x
    x = 8,734,962,912.18/145,270.72
  6. Step 6: Final answer
    x = 60,128.86

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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.