Home / 206,156.79-308,546.16-117,386.47

Finding the Fourth Proportional to 206,156.79, 308,546.16 and 117,386.47

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Solution

The fourth proportional to 206,156.79, 308,546.16 and 117,386.47 is: 175,687.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,156.79 : 308,546.16 = 117,386.47 : x
  2. Step 2: Convert to fraction form
    206,156.79/308,546.16 = 117,386.47/x
  3. Step 3: Cross multiply
    206,156.79x = 308,546.16 × 117,386.47
  4. Step 4: Simplify right side
    206,156.79x = 36,219,144,554.46
  5. Step 5: Solve for x
    x = 36,219,144,554.46/206,156.79
  6. Step 6: Final answer
    x = 175,687.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.