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Finding the Fourth Proportional to 122,767.97, 169,443.07 and 76,848.97

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Solution

The fourth proportional to 122,767.97, 169,443.07 and 76,848.97 is: 106,066.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,767.97 : 169,443.07 = 76,848.97 : x
  2. Step 2: Convert to fraction form
    122,767.97/169,443.07 = 76,848.97/x
  3. Step 3: Cross multiply
    122,767.97x = 169,443.07 × 76,848.97
  4. Step 4: Simplify right side
    122,767.97x = 13,021,524,555.92
  5. Step 5: Solve for x
    x = 13,021,524,555.92/122,767.97
  6. Step 6: Final answer
    x = 106,066.14

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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.