Home / 99,109.92-148,666.10-28,990.65

Finding the Fourth Proportional to 99,109.92, 148,666.10 and 28,990.65

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Solution

The fourth proportional to 99,109.92, 148,666.10 and 28,990.65 is: 43,486.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,109.92 : 148,666.10 = 28,990.65 : x
  2. Step 2: Convert to fraction form
    99,109.92/148,666.10 = 28,990.65/x
  3. Step 3: Cross multiply
    99,109.92x = 148,666.10 × 28,990.65
  4. Step 4: Simplify right side
    99,109.92x = 4,309,926,727.01
  5. Step 5: Solve for x
    x = 4,309,926,727.01/99,109.92
  6. Step 6: Final answer
    x = 43,486.33

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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.