Home / 122,749.45-169,337.04-79,725.89

Finding the Fourth Proportional to 122,749.45, 169,337.04 and 79,725.89

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Solution

The fourth proportional to 122,749.45, 169,337.04 and 79,725.89 is: 109,984.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,749.45 : 169,337.04 = 79,725.89 : x
  2. Step 2: Convert to fraction form
    122,749.45/169,337.04 = 79,725.89/x
  3. Step 3: Cross multiply
    122,749.45x = 169,337.04 × 79,725.89
  4. Step 4: Simplify right side
    122,749.45x = 13,500,546,223.97
  5. Step 5: Solve for x
    x = 13,500,546,223.97/122,749.45
  6. Step 6: Final answer
    x = 109,984.58

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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.