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Finding the Fourth Proportional to 186,637.06, 279,789.81 and 72,758.62

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Solution

The fourth proportional to 186,637.06, 279,789.81 and 72,758.62 is: 109,073.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,637.06 : 279,789.81 = 72,758.62 : x
  2. Step 2: Convert to fraction form
    186,637.06/279,789.81 = 72,758.62/x
  3. Step 3: Cross multiply
    186,637.06x = 279,789.81 × 72,758.62
  4. Step 4: Simplify right side
    186,637.06x = 20,357,120,465.66
  5. Step 5: Solve for x
    x = 20,357,120,465.66/186,637.06
  6. Step 6: Final answer
    x = 109,073.30

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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.