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Finding the Fourth Proportional to 213,151.77, 319,727.70 and 108,000.81

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Solution

The fourth proportional to 213,151.77, 319,727.70 and 108,000.81 is: 162,001.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,151.77 : 319,727.70 = 108,000.81 : x
  2. Step 2: Convert to fraction form
    213,151.77/319,727.70 = 108,000.81/x
  3. Step 3: Cross multiply
    213,151.77x = 319,727.70 × 108,000.81
  4. Step 4: Simplify right side
    213,151.77x = 34,530,850,579.44
  5. Step 5: Solve for x
    x = 34,530,850,579.44/213,151.77
  6. Step 6: Final answer
    x = 162,001.24

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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.