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Finding the Fourth Proportional to 186,968.72, 280,612.24 and 74,727.68

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Solution

The fourth proportional to 186,968.72, 280,612.24 and 74,727.68 is: 112,155.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,968.72 : 280,612.24 = 74,727.68 : x
  2. Step 2: Convert to fraction form
    186,968.72/280,612.24 = 74,727.68/x
  3. Step 3: Cross multiply
    186,968.72x = 280,612.24 × 74,727.68
  4. Step 4: Simplify right side
    186,968.72x = 20,969,501,674.80
  5. Step 5: Solve for x
    x = 20,969,501,674.80/186,968.72
  6. Step 6: Final answer
    x = 112,155.13

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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.