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Finding the Fourth Proportional to 126,521.88, 189,776.34 and 37,776.12

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Solution

The fourth proportional to 126,521.88, 189,776.34 and 37,776.12 is: 56,662.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,521.88 : 189,776.34 = 37,776.12 : x
  2. Step 2: Convert to fraction form
    126,521.88/189,776.34 = 37,776.12/x
  3. Step 3: Cross multiply
    126,521.88x = 189,776.34 × 37,776.12
  4. Step 4: Simplify right side
    126,521.88x = 7,169,013,793.00
  5. Step 5: Solve for x
    x = 7,169,013,793.00/126,521.88
  6. Step 6: Final answer
    x = 56,662.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.