Home / 122,844.60-169,511.64-69,128.46

Finding the Fourth Proportional to 122,844.60, 169,511.64 and 69,128.46

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Solution

The fourth proportional to 122,844.60, 169,511.64 and 69,128.46 is: 95,389.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,844.60 : 169,511.64 = 69,128.46 : x
  2. Step 2: Convert to fraction form
    122,844.60/169,511.64 = 69,128.46/x
  3. Step 3: Cross multiply
    122,844.60x = 169,511.64 × 69,128.46
  4. Step 4: Simplify right side
    122,844.60x = 11,718,078,625.27
  5. Step 5: Solve for x
    x = 11,718,078,625.27/122,844.60
  6. Step 6: Final answer
    x = 95,389.45

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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.