Home / 99,970.11-138,003.08-62,269.47

Finding the Fourth Proportional to 99,970.11, 138,003.08 and 62,269.47

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Solution

The fourth proportional to 99,970.11, 138,003.08 and 62,269.47 is: 85,959.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,970.11 : 138,003.08 = 62,269.47 : x
  2. Step 2: Convert to fraction form
    99,970.11/138,003.08 = 62,269.47/x
  3. Step 3: Cross multiply
    99,970.11x = 138,003.08 × 62,269.47
  4. Step 4: Simplify right side
    99,970.11x = 8,593,378,338.62
  5. Step 5: Solve for x
    x = 8,593,378,338.62/99,970.11
  6. Step 6: Final answer
    x = 85,959.48

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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.