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Finding the Fourth Proportional to 84,879.36, 127,111.68 and 73,267.20

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Solution

The fourth proportional to 84,879.36, 127,111.68 and 73,267.20 is: 109,721.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,879.36 : 127,111.68 = 73,267.20 : x
  2. Step 2: Convert to fraction form
    84,879.36/127,111.68 = 73,267.20/x
  3. Step 3: Cross multiply
    84,879.36x = 127,111.68 × 73,267.20
  4. Step 4: Simplify right side
    84,879.36x = 9,313,116,880.90
  5. Step 5: Solve for x
    x = 9,313,116,880.90/84,879.36
  6. Step 6: Final answer
    x = 109,721.81

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1.5x scale

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.