Home / 262,131.12-393,201-75,142.62

Finding the Fourth Proportional to 262,131.12, 393,201 and 75,142.62

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Solution

The fourth proportional to 262,131.12, 393,201 and 75,142.62 is: 112,715.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,131.12 : 393,201 = 75,142.62 : x
  2. Step 2: Convert to fraction form
    262,131.12/393,201 = 75,142.62/x
  3. Step 3: Cross multiply
    262,131.12x = 393,201 × 75,142.62
  4. Step 4: Simplify right side
    262,131.12x = 29,546,153,326.62
  5. Step 5: Solve for x
    x = 29,546,153,326.62/262,131.12
  6. Step 6: Final answer
    x = 112,715.17

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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.