Home / 145,278.78-217,449.44-75,061.50

Finding the Fourth Proportional to 145,278.78, 217,449.44 and 75,061.50

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Solution

The fourth proportional to 145,278.78, 217,449.44 and 75,061.50 is: 112,350.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,278.78 : 217,449.44 = 75,061.50 : x
  2. Step 2: Convert to fraction form
    145,278.78/217,449.44 = 75,061.50/x
  3. Step 3: Cross multiply
    145,278.78x = 217,449.44 × 75,061.50
  4. Step 4: Simplify right side
    145,278.78x = 16,322,081,140.56
  5. Step 5: Solve for x
    x = 16,322,081,140.56/145,278.78
  6. Step 6: Final answer
    x = 112,350.07

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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.