Home / 208,006.79-287,049.42-117,381.96

Finding the Fourth Proportional to 208,006.79, 287,049.42 and 117,381.96

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Solution

The fourth proportional to 208,006.79, 287,049.42 and 117,381.96 is: 161,987.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,006.79 : 287,049.42 = 117,381.96 : x
  2. Step 2: Convert to fraction form
    208,006.79/287,049.42 = 117,381.96/x
  3. Step 3: Cross multiply
    208,006.79x = 287,049.42 × 117,381.96
  4. Step 4: Simplify right side
    208,006.79x = 33,694,423,536.46
  5. Step 5: Solve for x
    x = 33,694,423,536.46/208,006.79
  6. Step 6: Final answer
    x = 161,987.14

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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.