Home / 122,748.70-169,336.01-79,725.14

Finding the Fourth Proportional to 122,748.70, 169,336.01 and 79,725.14

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Solution

The fourth proportional to 122,748.70, 169,336.01 and 79,725.14 is: 109,983.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,748.70 : 169,336.01 = 79,725.14 : x
  2. Step 2: Convert to fraction form
    122,748.70/169,336.01 = 79,725.14/x
  3. Step 3: Cross multiply
    122,748.70x = 169,336.01 × 79,725.14
  4. Step 4: Simplify right side
    122,748.70x = 13,500,336,705.67
  5. Step 5: Solve for x
    x = 13,500,336,705.67/122,748.70
  6. Step 6: Final answer
    x = 109,983.55

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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.