Home / 122,740.92-169,361.28-69,021.72

Finding the Fourth Proportional to 122,740.92, 169,361.28 and 69,021.72

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Solution

The fourth proportional to 122,740.92, 169,361.28 and 69,021.72 is: 95,238.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,740.92 : 169,361.28 = 69,021.72 : x
  2. Step 2: Convert to fraction form
    122,740.92/169,361.28 = 69,021.72/x
  3. Step 3: Cross multiply
    122,740.92x = 169,361.28 × 69,021.72
  4. Step 4: Simplify right side
    122,740.92x = 11,689,606,847.00
  5. Step 5: Solve for x
    x = 11,689,606,847.00/122,740.92
  6. Step 6: Final answer
    x = 95,238.06

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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.