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Finding the Fourth Proportional to 145,273.92, 217,911.96 and 40,090.56

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Solution

The fourth proportional to 145,273.92, 217,911.96 and 40,090.56 is: 60,136.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,273.92 : 217,911.96 = 40,090.56 : x
  2. Step 2: Convert to fraction form
    145,273.92/217,911.96 = 40,090.56/x
  3. Step 3: Cross multiply
    145,273.92x = 217,911.96 × 40,090.56
  4. Step 4: Simplify right side
    145,273.92x = 8,736,212,507.10
  5. Step 5: Solve for x
    x = 8,736,212,507.10/145,273.92
  6. Step 6: Final answer
    x = 60,136.14

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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.