Home / 136,068.43-187,709.09-117,172.75

Finding the Fourth Proportional to 136,068.43, 187,709.09 and 117,172.75

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Solution

The fourth proportional to 136,068.43, 187,709.09 and 117,172.75 is: 161,642.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,068.43 : 187,709.09 = 117,172.75 : x
  2. Step 2: Convert to fraction form
    136,068.43/187,709.09 = 117,172.75/x
  3. Step 3: Cross multiply
    136,068.43x = 187,709.09 × 117,172.75
  4. Step 4: Simplify right side
    136,068.43x = 21,994,389,689.43
  5. Step 5: Solve for x
    x = 21,994,389,689.43/136,068.43
  6. Step 6: Final answer
    x = 161,642.12

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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.