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Finding the Fourth Proportional to 89,703.77, 134,555.84 and 84,223.28

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Solution

The fourth proportional to 89,703.77, 134,555.84 and 84,223.28 is: 126,335.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,703.77 : 134,555.84 = 84,223.28 : x
  2. Step 2: Convert to fraction form
    89,703.77/134,555.84 = 84,223.28/x
  3. Step 3: Cross multiply
    89,703.77x = 134,555.84 × 84,223.28
  4. Step 4: Simplify right side
    89,703.77x = 11,332,734,734.90
  5. Step 5: Solve for x
    x = 11,332,734,734.90/89,703.77
  6. Step 6: Final answer
    x = 126,335.11

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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.