Home / 100,083.36-138,049.92-64,216.56

Finding the Fourth Proportional to 100,083.36, 138,049.92 and 64,216.56

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Solution

The fourth proportional to 100,083.36, 138,049.92 and 64,216.56 is: 88,577.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,083.36 : 138,049.92 = 64,216.56 : x
  2. Step 2: Convert to fraction form
    100,083.36/138,049.92 = 64,216.56/x
  3. Step 3: Cross multiply
    100,083.36x = 138,049.92 × 64,216.56
  4. Step 4: Simplify right side
    100,083.36x = 8,865,090,970.68
  5. Step 5: Solve for x
    x = 8,865,090,970.68/100,083.36
  6. Step 6: Final answer
    x = 88,577.07

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1.5x scale

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.