Home / 122,749.13-169,395.62-74,992.34

Finding the Fourth Proportional to 122,749.13, 169,395.62 and 74,992.34

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Solution

The fourth proportional to 122,749.13, 169,395.62 and 74,992.34 is: 103,490.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,749.13 : 169,395.62 = 74,992.34 : x
  2. Step 2: Convert to fraction form
    122,749.13/169,395.62 = 74,992.34/x
  3. Step 3: Cross multiply
    122,749.13x = 169,395.62 × 74,992.34
  4. Step 4: Simplify right side
    122,749.13x = 12,703,372,707.61
  5. Step 5: Solve for x
    x = 12,703,372,707.61/122,749.13
  6. Step 6: Final answer
    x = 103,490.54

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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.