Home / 103,198.20-142,355.85-64,943.47

Finding the Fourth Proportional to 103,198.20, 142,355.85 and 64,943.47

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Solution

The fourth proportional to 103,198.20, 142,355.85 and 64,943.47 is: 89,585.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,198.20 : 142,355.85 = 64,943.47 : x
  2. Step 2: Convert to fraction form
    103,198.20/142,355.85 = 64,943.47/x
  3. Step 3: Cross multiply
    103,198.20x = 142,355.85 × 64,943.47
  4. Step 4: Simplify right side
    103,198.20x = 9,245,083,356.17
  5. Step 5: Solve for x
    x = 9,245,083,356.17/103,198.20
  6. Step 6: Final answer
    x = 89,585.70

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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.