Home / 103,216.12-142,452.66-74,628.52

Finding the Fourth Proportional to 103,216.12, 142,452.66 and 74,628.52

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Solution

The fourth proportional to 103,216.12, 142,452.66 and 74,628.52 is: 102,997.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,216.12 : 142,452.66 = 74,628.52 : x
  2. Step 2: Convert to fraction form
    103,216.12/142,452.66 = 74,628.52/x
  3. Step 3: Cross multiply
    103,216.12x = 142,452.66 × 74,628.52
  4. Step 4: Simplify right side
    103,216.12x = 10,631,031,185.86
  5. Step 5: Solve for x
    x = 10,631,031,185.86/103,216.12
  6. Step 6: Final answer
    x = 102,997.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.