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Finding the Fourth Proportional to 117,706.85, 162,436.82 and 63,990.69

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Solution

The fourth proportional to 117,706.85, 162,436.82 and 63,990.69 is: 88,307.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,706.85 : 162,436.82 = 63,990.69 : x
  2. Step 2: Convert to fraction form
    117,706.85/162,436.82 = 63,990.69/x
  3. Step 3: Cross multiply
    117,706.85x = 162,436.82 × 63,990.69
  4. Step 4: Simplify right side
    117,706.85x = 10,394,444,193.21
  5. Step 5: Solve for x
    x = 10,394,444,193.21/117,706.85
  6. Step 6: Final answer
    x = 88,307.90

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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.