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Finding the Fourth Proportional to 207,156.98, 285,898.56 and 126,631.64

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Solution

The fourth proportional to 207,156.98, 285,898.56 and 126,631.64 is: 174,765.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,156.98 : 285,898.56 = 126,631.64 : x
  2. Step 2: Convert to fraction form
    207,156.98/285,898.56 = 126,631.64/x
  3. Step 3: Cross multiply
    207,156.98x = 285,898.56 × 126,631.64
  4. Step 4: Simplify right side
    207,156.98x = 36,203,803,526.44
  5. Step 5: Solve for x
    x = 36,203,803,526.44/207,156.98
  6. Step 6: Final answer
    x = 174,765.07

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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.