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Finding the Fourth Proportional to 186,068.36, 279,155.42 and 91,327

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Solution

The fourth proportional to 186,068.36, 279,155.42 and 91,327 is: 137,016.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,068.36 : 279,155.42 = 91,327 : x
  2. Step 2: Convert to fraction form
    186,068.36/279,155.42 = 91,327/x
  3. Step 3: Cross multiply
    186,068.36x = 279,155.42 × 91,327
  4. Step 4: Simplify right side
    186,068.36x = 25,494,427,042.34
  5. Step 5: Solve for x
    x = 25,494,427,042.34/186,068.36
  6. Step 6: Final answer
    x = 137,016.45

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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.