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Finding the Fourth Proportional to 115,249.50, 159,044.31 and 64,950.30

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Solution

The fourth proportional to 115,249.50, 159,044.31 and 64,950.30 is: 89,631.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,249.50 : 159,044.31 = 64,950.30 : x
  2. Step 2: Convert to fraction form
    115,249.50/159,044.31 = 64,950.30/x
  3. Step 3: Cross multiply
    115,249.50x = 159,044.31 × 64,950.30
  4. Step 4: Simplify right side
    115,249.50x = 10,329,975,647.79
  5. Step 5: Solve for x
    x = 10,329,975,647.79/115,249.50
  6. Step 6: Final answer
    x = 89,631.41

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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.