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Finding the Fourth Proportional to 186,915.34, 278,942.62 and 166,969.90

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Solution

The fourth proportional to 186,915.34, 278,942.62 and 166,969.90 is: 249,177.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,915.34 : 278,942.62 = 166,969.90 : x
  2. Step 2: Convert to fraction form
    186,915.34/278,942.62 = 166,969.90/x
  3. Step 3: Cross multiply
    186,915.34x = 278,942.62 × 166,969.90
  4. Step 4: Simplify right side
    186,915.34x = 46,575,021,367.14
  5. Step 5: Solve for x
    x = 46,575,021,367.14/186,915.34
  6. Step 6: Final answer
    x = 249,177.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.