Home / 122,607.69-169,218.66-102,157.30

Finding the Fourth Proportional to 122,607.69, 169,218.66 and 102,157.30

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Solution

The fourth proportional to 122,607.69, 169,218.66 and 102,157.30 is: 140,993.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,607.69 : 169,218.66 = 102,157.30 : x
  2. Step 2: Convert to fraction form
    122,607.69/169,218.66 = 102,157.30/x
  3. Step 3: Cross multiply
    122,607.69x = 169,218.66 × 102,157.30
  4. Step 4: Simplify right side
    122,607.69x = 17,286,921,415.22
  5. Step 5: Solve for x
    x = 17,286,921,415.22/122,607.69
  6. Step 6: Final answer
    x = 140,993.78

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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.