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Finding the Fourth Proportional to 123,800.81, 170,845.40 and 67,210.97

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Solution

The fourth proportional to 123,800.81, 170,845.40 and 67,210.97 is: 92,751.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,800.81 : 170,845.40 = 67,210.97 : x
  2. Step 2: Convert to fraction form
    123,800.81/170,845.40 = 67,210.97/x
  3. Step 3: Cross multiply
    123,800.81x = 170,845.40 × 67,210.97
  4. Step 4: Simplify right side
    123,800.81x = 11,482,684,367.84
  5. Step 5: Solve for x
    x = 11,482,684,367.84/123,800.81
  6. Step 6: Final answer
    x = 92,751.29

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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.