Home / 128,940.24-193,410.42-40,200.90

Finding the Fourth Proportional to 128,940.24, 193,410.42 and 40,200.90

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Solution

The fourth proportional to 128,940.24, 193,410.42 and 40,200.90 is: 60,301.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,940.24 : 193,410.42 = 40,200.90 : x
  2. Step 2: Convert to fraction form
    128,940.24/193,410.42 = 40,200.90/x
  3. Step 3: Cross multiply
    128,940.24x = 193,410.42 × 40,200.90
  4. Step 4: Simplify right side
    128,940.24x = 7,775,272,953.38
  5. Step 5: Solve for x
    x = 7,775,272,953.38/128,940.24
  6. Step 6: Final answer
    x = 60,301.37

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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.