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Finding the Fourth Proportional to 186,435.10, 279,689.10 and 74,096.20

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Solution

The fourth proportional to 186,435.10, 279,689.10 and 74,096.20 is: 111,158.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,435.10 : 279,689.10 = 74,096.20 : x
  2. Step 2: Convert to fraction form
    186,435.10/279,689.10 = 74,096.20/x
  3. Step 3: Cross multiply
    186,435.10x = 279,689.10 × 74,096.20
  4. Step 4: Simplify right side
    186,435.10x = 20,723,899,491.42
  5. Step 5: Solve for x
    x = 20,723,899,491.42/186,435.10
  6. Step 6: Final answer
    x = 111,158.79

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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.