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Finding the Fourth Proportional to 207,891.45, 286,890.90 and 112,398.83

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Solution

The fourth proportional to 207,891.45, 286,890.90 and 112,398.83 is: 155,110.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,891.45 : 286,890.90 = 112,398.83 : x
  2. Step 2: Convert to fraction form
    207,891.45/286,890.90 = 112,398.83/x
  3. Step 3: Cross multiply
    207,891.45x = 286,890.90 × 112,398.83
  4. Step 4: Simplify right side
    207,891.45x = 32,246,202,214.87
  5. Step 5: Solve for x
    x = 32,246,202,214.87/207,891.45
  6. Step 6: Final answer
    x = 155,110.77

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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.