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Finding the Fourth Proportional to 186,472.60, 279,708.90 and 61,813.60

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Solution

The fourth proportional to 186,472.60, 279,708.90 and 61,813.60 is: 92,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,472.60 : 279,708.90 = 61,813.60 : x
  2. Step 2: Convert to fraction form
    186,472.60/279,708.90 = 61,813.60/x
  3. Step 3: Cross multiply
    186,472.60x = 279,708.90 × 61,813.60
  4. Step 4: Simplify right side
    186,472.60x = 17,289,814,061.04
  5. Step 5: Solve for x
    x = 17,289,814,061.04/186,472.60
  6. Step 6: Final answer
    x = 92,720.40

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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.