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Finding the Fourth Proportional to 122,513.70, 169,066.92 and 68,064.69

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Solution

The fourth proportional to 122,513.70, 169,066.92 and 68,064.69 is: 93,928.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,513.70 : 169,066.92 = 68,064.69 : x
  2. Step 2: Convert to fraction form
    122,513.70/169,066.92 = 68,064.69/x
  3. Step 3: Cross multiply
    122,513.70x = 169,066.92 × 68,064.69
  4. Step 4: Simplify right side
    122,513.70x = 11,507,487,499.05
  5. Step 5: Solve for x
    x = 11,507,487,499.05/122,513.70
  6. Step 6: Final answer
    x = 93,928.17

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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.