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Finding the Fourth Proportional to 117,979.88, 162,813.66 and 64,265.34

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Solution

The fourth proportional to 117,979.88, 162,813.66 and 64,265.34 is: 88,686.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,979.88 : 162,813.66 = 64,265.34 : x
  2. Step 2: Convert to fraction form
    117,979.88/162,813.66 = 64,265.34/x
  3. Step 3: Cross multiply
    117,979.88x = 162,813.66 × 64,265.34
  4. Step 4: Simplify right side
    117,979.88x = 10,463,275,216.54
  5. Step 5: Solve for x
    x = 10,463,275,216.54/117,979.88
  6. Step 6: Final answer
    x = 88,686.95

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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.