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Finding the Fourth Proportional to 123,765.66, 170,799.71 and 67,176.90

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Solution

The fourth proportional to 123,765.66, 170,799.71 and 67,176.90 is: 92,705.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,765.66 : 170,799.71 = 67,176.90 : x
  2. Step 2: Convert to fraction form
    123,765.66/170,799.71 = 67,176.90/x
  3. Step 3: Cross multiply
    123,765.66x = 170,799.71 × 67,176.90
  4. Step 4: Simplify right side
    123,765.66x = 11,473,794,702.81
  5. Step 5: Solve for x
    x = 11,473,794,702.81/123,765.66
  6. Step 6: Final answer
    x = 92,705.80

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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.