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Finding the Fourth Proportional to 117,979.50, 162,813.14 and 64,264.96

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Solution

The fourth proportional to 117,979.50, 162,813.14 and 64,264.96 is: 88,686.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,979.50 : 162,813.14 = 64,264.96 : x
  2. Step 2: Convert to fraction form
    117,979.50/162,813.14 = 64,264.96/x
  3. Step 3: Cross multiply
    117,979.50x = 162,813.14 × 64,264.96
  4. Step 4: Simplify right side
    117,979.50x = 10,463,179,929.57
  5. Step 5: Solve for x
    x = 10,463,179,929.57/117,979.50
  6. Step 6: Final answer
    x = 88,686.42

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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.