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Finding the Fourth Proportional to 117,561.88, 162,238.08 and 69,815.38

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Solution

The fourth proportional to 117,561.88, 162,238.08 and 69,815.38 is: 96,346.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,561.88 : 162,238.08 = 69,815.38 : x
  2. Step 2: Convert to fraction form
    117,561.88/162,238.08 = 69,815.38/x
  3. Step 3: Cross multiply
    117,561.88x = 162,238.08 × 69,815.38
  4. Step 4: Simplify right side
    117,561.88x = 11,326,713,205.67
  5. Step 5: Solve for x
    x = 11,326,713,205.67/117,561.88
  6. Step 6: Final answer
    x = 96,346.82

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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.