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Finding the Fourth Proportional to 186,646.87, 279,804.35 and 72,768.43

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Solution

The fourth proportional to 186,646.87, 279,804.35 and 72,768.43 is: 109,087.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,646.87 : 279,804.35 = 72,768.43 : x
  2. Step 2: Convert to fraction form
    186,646.87/279,804.35 = 72,768.43/x
  3. Step 3: Cross multiply
    186,646.87x = 279,804.35 × 72,768.43
  4. Step 4: Simplify right side
    186,646.87x = 20,360,922,892.83
  5. Step 5: Solve for x
    x = 20,360,922,892.83/186,646.87
  6. Step 6: Final answer
    x = 109,087.94

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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.