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Finding the Fourth Proportional to 186,489.60, 279,704.70 and 61,830.60

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Solution

The fourth proportional to 186,489.60, 279,704.70 and 61,830.60 is: 92,736.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,489.60 : 279,704.70 = 61,830.60 : x
  2. Step 2: Convert to fraction form
    186,489.60/279,704.70 = 61,830.60/x
  3. Step 3: Cross multiply
    186,489.60x = 279,704.70 × 61,830.60
  4. Step 4: Simplify right side
    186,489.60x = 17,294,309,423.82
  5. Step 5: Solve for x
    x = 17,294,309,423.82/186,489.60
  6. Step 6: Final answer
    x = 92,736.05

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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.