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Finding the Fourth Proportional to 99,329.99, 148,807.22 and 76,879.08

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Solution

The fourth proportional to 99,329.99, 148,807.22 and 76,879.08 is: 115,173.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,329.99 : 148,807.22 = 76,879.08 : x
  2. Step 2: Convert to fraction form
    99,329.99/148,807.22 = 76,879.08/x
  3. Step 3: Cross multiply
    99,329.99x = 148,807.22 × 76,879.08
  4. Step 4: Simplify right side
    99,329.99x = 11,440,161,786.56
  5. Step 5: Solve for x
    x = 11,440,161,786.56/99,329.99
  6. Step 6: Final answer
    x = 115,173.30

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1.5x scale

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.