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Finding the Fourth Proportional to 122,700.83, 169,322.81 and 68,988.92

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Solution

The fourth proportional to 122,700.83, 169,322.81 and 68,988.92 is: 95,202.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,700.83 : 169,322.81 = 68,988.92 : x
  2. Step 2: Convert to fraction form
    122,700.83/169,322.81 = 68,988.92/x
  3. Step 3: Cross multiply
    122,700.83x = 169,322.81 × 68,988.92
  4. Step 4: Simplify right side
    122,700.83x = 11,681,396,601.71
  5. Step 5: Solve for x
    x = 11,681,396,601.71/122,700.83
  6. Step 6: Final answer
    x = 95,202.27

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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.