Home / 279,445.10-419,167.65-89,905.10

Finding the Fourth Proportional to 279,445.10, 419,167.65 and 89,905.10

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Solution

The fourth proportional to 279,445.10, 419,167.65 and 89,905.10 is: 134,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,445.10 : 419,167.65 = 89,905.10 : x
  2. Step 2: Convert to fraction form
    279,445.10/419,167.65 = 89,905.10/x
  3. Step 3: Cross multiply
    279,445.10x = 419,167.65 × 89,905.10
  4. Step 4: Simplify right side
    279,445.10x = 37,685,309,490.02
  5. Step 5: Solve for x
    x = 37,685,309,490.02/279,445.10
  6. Step 6: Final answer
    x = 134,857.65

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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.