Home / 122,751.31-169,371.40-71,754.18

Finding the Fourth Proportional to 122,751.31, 169,371.40 and 71,754.18

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Solution

The fourth proportional to 122,751.31, 169,371.40 and 71,754.18 is: 99,005.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,751.31 : 169,371.40 = 71,754.18 : x
  2. Step 2: Convert to fraction form
    122,751.31/169,371.40 = 71,754.18/x
  3. Step 3: Cross multiply
    122,751.31x = 169,371.40 × 71,754.18
  4. Step 4: Simplify right side
    122,751.31x = 12,153,105,922.45
  5. Step 5: Solve for x
    x = 12,153,105,922.45/122,751.31
  6. Step 6: Final answer
    x = 99,005.92

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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.