Home / 117,234.49-161,694.33-100,909.48

Finding the Fourth Proportional to 117,234.49, 161,694.33 and 100,909.48

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Solution

The fourth proportional to 117,234.49, 161,694.33 and 100,909.48 is: 139,178.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,234.49 : 161,694.33 = 100,909.48 : x
  2. Step 2: Convert to fraction form
    117,234.49/161,694.33 = 100,909.48/x
  3. Step 3: Cross multiply
    117,234.49x = 161,694.33 × 100,909.48
  4. Step 4: Simplify right side
    117,234.49x = 16,316,490,759.25
  5. Step 5: Solve for x
    x = 16,316,490,759.25/117,234.49
  6. Step 6: Final answer
    x = 139,178.25

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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.