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Finding the Fourth Proportional to 122,844, 169,525.40 and 69,129.92

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Solution

The fourth proportional to 122,844, 169,525.40 and 69,129.92 is: 95,399.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,844 : 169,525.40 = 69,129.92 : x
  2. Step 2: Convert to fraction form
    122,844/169,525.40 = 69,129.92/x
  3. Step 3: Cross multiply
    122,844x = 169,525.40 × 69,129.92
  4. Step 4: Simplify right side
    122,844x = 11,719,277,339.97
  5. Step 5: Solve for x
    x = 11,719,277,339.97/122,844
  6. Step 6: Final answer
    x = 95,399.67

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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.