Home / 193,710.24-290,421.12-81,423.36

Finding the Fourth Proportional to 193,710.24, 290,421.12 and 81,423.36

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Solution

The fourth proportional to 193,710.24, 290,421.12 and 81,423.36 is: 122,074.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,710.24 : 290,421.12 = 81,423.36 : x
  2. Step 2: Convert to fraction form
    193,710.24/290,421.12 = 81,423.36/x
  3. Step 3: Cross multiply
    193,710.24x = 290,421.12 × 81,423.36
  4. Step 4: Simplify right side
    193,710.24x = 23,647,063,405.36
  5. Step 5: Solve for x
    x = 23,647,063,405.36/193,710.24
  6. Step 6: Final answer
    x = 122,074.41

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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.