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Finding the Fourth Proportional to 186,767.10, 280,187.10 and 74,428.20

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Solution

The fourth proportional to 186,767.10, 280,187.10 and 74,428.20 is: 111,656.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,767.10 : 280,187.10 = 74,428.20 : x
  2. Step 2: Convert to fraction form
    186,767.10/280,187.10 = 74,428.20/x
  3. Step 3: Cross multiply
    186,767.10x = 280,187.10 × 74,428.20
  4. Step 4: Simplify right side
    186,767.10x = 20,853,821,516.22
  5. Step 5: Solve for x
    x = 20,853,821,516.22/186,767.10
  6. Step 6: Final answer
    x = 111,656.83

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1.5x scale

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.