Home / 107,821.62-161,666.55-51,678.90

Finding the Fourth Proportional to 107,821.62, 161,666.55 and 51,678.90

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Solution

The fourth proportional to 107,821.62, 161,666.55 and 51,678.90 is: 77,486.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,821.62 : 161,666.55 = 51,678.90 : x
  2. Step 2: Convert to fraction form
    107,821.62/161,666.55 = 51,678.90/x
  3. Step 3: Cross multiply
    107,821.62x = 161,666.55 × 51,678.90
  4. Step 4: Simplify right side
    107,821.62x = 8,354,749,470.80
  5. Step 5: Solve for x
    x = 8,354,749,470.80/107,821.62
  6. Step 6: Final answer
    x = 77,486.77

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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.