Home / 117,143.87-161,537.72-100,204.19

Finding the Fourth Proportional to 117,143.87, 161,537.72 and 100,204.19

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Solution

The fourth proportional to 117,143.87, 161,537.72 and 100,204.19 is: 138,178.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,143.87 : 161,537.72 = 100,204.19 : x
  2. Step 2: Convert to fraction form
    117,143.87/161,537.72 = 100,204.19/x
  3. Step 3: Cross multiply
    117,143.87x = 161,537.72 × 100,204.19
  4. Step 4: Simplify right side
    117,143.87x = 16,186,755,684.10
  5. Step 5: Solve for x
    x = 16,186,755,684.10/117,143.87
  6. Step 6: Final answer
    x = 138,178.43

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1.5x scale

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.