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Finding the Fourth Proportional to 207,810.88, 286,587.68 and 131,196.87

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Solution

The fourth proportional to 207,810.88, 286,587.68 and 131,196.87 is: 180,930.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,810.88 : 286,587.68 = 131,196.87 : x
  2. Step 2: Convert to fraction form
    207,810.88/286,587.68 = 131,196.87/x
  3. Step 3: Cross multiply
    207,810.88x = 286,587.68 × 131,196.87
  4. Step 4: Simplify right side
    207,810.88x = 37,599,405,940.58
  5. Step 5: Solve for x
    x = 37,599,405,940.58/207,810.88
  6. Step 6: Final answer
    x = 180,930.88

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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.