Home / 122,700.64-169,331.78-68,985.49

Finding the Fourth Proportional to 122,700.64, 169,331.78 and 68,985.49

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Solution

The fourth proportional to 122,700.64, 169,331.78 and 68,985.49 is: 95,202.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,700.64 : 169,331.78 = 68,985.49 : x
  2. Step 2: Convert to fraction form
    122,700.64/169,331.78 = 68,985.49/x
  3. Step 3: Cross multiply
    122,700.64x = 169,331.78 × 68,985.49
  4. Step 4: Simplify right side
    122,700.64x = 11,681,435,815.87
  5. Step 5: Solve for x
    x = 11,681,435,815.87/122,700.64
  6. Step 6: Final answer
    x = 95,202.73

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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.