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Finding the Fourth Proportional to 117,721.36, 162,456.32 and 64,006.32

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Solution

The fourth proportional to 117,721.36, 162,456.32 and 64,006.32 is: 88,329.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,721.36 : 162,456.32 = 64,006.32 : x
  2. Step 2: Convert to fraction form
    117,721.36/162,456.32 = 64,006.32/x
  3. Step 3: Cross multiply
    117,721.36x = 162,456.32 × 64,006.32
  4. Step 4: Simplify right side
    117,721.36x = 10,398,231,203.94
  5. Step 5: Solve for x
    x = 10,398,231,203.94/117,721.36
  6. Step 6: Final answer
    x = 88,329.18

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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.