Home / 189,677.75-261,755.10-109,103.20

Finding the Fourth Proportional to 189,677.75, 261,755.10 and 109,103.20

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Solution

The fourth proportional to 189,677.75, 261,755.10 and 109,103.20 is: 150,562.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,677.75 : 261,755.10 = 109,103.20 : x
  2. Step 2: Convert to fraction form
    189,677.75/261,755.10 = 109,103.20/x
  3. Step 3: Cross multiply
    189,677.75x = 261,755.10 × 109,103.20
  4. Step 4: Simplify right side
    189,677.75x = 28,558,319,026.32
  5. Step 5: Solve for x
    x = 28,558,319,026.32/189,677.75
  6. Step 6: Final answer
    x = 150,562.30

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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.