Home / 122,878.79-169,554.27-69,160.61

Finding the Fourth Proportional to 122,878.79, 169,554.27 and 69,160.61

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Solution

The fourth proportional to 122,878.79, 169,554.27 and 69,160.61 is: 95,431.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,878.79 : 169,554.27 = 69,160.61 : x
  2. Step 2: Convert to fraction form
    122,878.79/169,554.27 = 69,160.61/x
  3. Step 3: Cross multiply
    122,878.79x = 169,554.27 × 69,160.61
  4. Step 4: Simplify right side
    122,878.79x = 11,726,476,741.30
  5. Step 5: Solve for x
    x = 11,726,476,741.30/122,878.79
  6. Step 6: Final answer
    x = 95,431.25

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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.