Home / 122,851.72-169,534.80-69,137.64

Finding the Fourth Proportional to 122,851.72, 169,534.80 and 69,137.64

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Solution

The fourth proportional to 122,851.72, 169,534.80 and 69,137.64 is: 95,409.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,851.72 : 169,534.80 = 69,137.64 : x
  2. Step 2: Convert to fraction form
    122,851.72/169,534.80 = 69,137.64/x
  3. Step 3: Cross multiply
    122,851.72x = 169,534.80 × 69,137.64
  4. Step 4: Simplify right side
    122,851.72x = 11,721,235,969.87
  5. Step 5: Solve for x
    x = 11,721,235,969.87/122,851.72
  6. Step 6: Final answer
    x = 95,409.62

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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.