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Finding the Fourth Proportional to 186,634.94, 279,786.62 and 72,756.50

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Solution

The fourth proportional to 186,634.94, 279,786.62 and 72,756.50 is: 109,070.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,634.94 : 279,786.62 = 72,756.50 : x
  2. Step 2: Convert to fraction form
    186,634.94/279,786.62 = 72,756.50/x
  3. Step 3: Cross multiply
    186,634.94x = 279,786.62 × 72,756.50
  4. Step 4: Simplify right side
    186,634.94x = 20,356,294,000.99
  5. Step 5: Solve for x
    x = 20,356,294,000.99/186,634.94
  6. Step 6: Final answer
    x = 109,070.12

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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.