Home / 279,131.18-418,688.96-89,590.05

Finding the Fourth Proportional to 279,131.18, 418,688.96 and 89,590.05

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Solution

The fourth proportional to 279,131.18, 418,688.96 and 89,590.05 is: 134,382.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,131.18 : 418,688.96 = 89,590.05 : x
  2. Step 2: Convert to fraction form
    279,131.18/418,688.96 = 89,590.05/x
  3. Step 3: Cross multiply
    279,131.18x = 418,688.96 × 89,590.05
  4. Step 4: Simplify right side
    279,131.18x = 37,510,364,412.90
  5. Step 5: Solve for x
    x = 37,510,364,412.90/279,131.18
  6. Step 6: Final answer
    x = 134,382.57

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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.