Home / 122,607.81-169,218.83-102,157.43

Finding the Fourth Proportional to 122,607.81, 169,218.83 and 102,157.43

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Solution

The fourth proportional to 122,607.81, 169,218.83 and 102,157.43 is: 140,993.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,607.81 : 169,218.83 = 102,157.43 : x
  2. Step 2: Convert to fraction form
    122,607.81/169,218.83 = 102,157.43/x
  3. Step 3: Cross multiply
    122,607.81x = 169,218.83 × 102,157.43
  4. Step 4: Simplify right side
    122,607.81x = 17,286,960,189.71
  5. Step 5: Solve for x
    x = 17,286,960,189.71/122,607.81
  6. Step 6: Final answer
    x = 140,993.96

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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.