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Finding the Fourth Proportional to 207,990.96, 287,027.54 and 112,497.65

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Solution

The fourth proportional to 207,990.96, 287,027.54 and 112,497.65 is: 155,246.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,990.96 : 287,027.54 = 112,497.65 : x
  2. Step 2: Convert to fraction form
    207,990.96/287,027.54 = 112,497.65/x
  3. Step 3: Cross multiply
    207,990.96x = 287,027.54 × 112,497.65
  4. Step 4: Simplify right side
    207,990.96x = 32,289,921,737.66
  5. Step 5: Solve for x
    x = 32,289,921,737.66/207,990.96
  6. Step 6: Final answer
    x = 155,246.76

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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.