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Finding the Fourth Proportional to 207,805.02, 286,770.99 and 112,311.72

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Solution

The fourth proportional to 207,805.02, 286,770.99 and 112,311.72 is: 154,990.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,805.02 : 286,770.99 = 112,311.72 : x
  2. Step 2: Convert to fraction form
    207,805.02/286,770.99 = 112,311.72/x
  3. Step 3: Cross multiply
    207,805.02x = 286,770.99 × 112,311.72
  4. Step 4: Simplify right side
    207,805.02x = 32,207,743,133.00
  5. Step 5: Solve for x
    x = 32,207,743,133.00/207,805.02
  6. Step 6: Final answer
    x = 154,990.21

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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.