Home / 122,740.92-169,146.54-87,351.48

Finding the Fourth Proportional to 122,740.92, 169,146.54 and 87,351.48

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Solution

The fourth proportional to 122,740.92, 169,146.54 and 87,351.48 is: 120,377.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,740.92 : 169,146.54 = 87,351.48 : x
  2. Step 2: Convert to fraction form
    122,740.92/169,146.54 = 87,351.48/x
  3. Step 3: Cross multiply
    122,740.92x = 169,146.54 × 87,351.48
  4. Step 4: Simplify right side
    122,740.92x = 14,775,200,605.88
  5. Step 5: Solve for x
    x = 14,775,200,605.88/122,740.92
  6. Step 6: Final answer
    x = 120,377.14

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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.