Home / 169,256.45-253,635.55-74,399.78

Finding the Fourth Proportional to 169,256.45, 253,635.55 and 74,399.78

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Solution

The fourth proportional to 169,256.45, 253,635.55 and 74,399.78 is: 111,490.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,256.45 : 253,635.55 = 74,399.78 : x
  2. Step 2: Convert to fraction form
    169,256.45/253,635.55 = 74,399.78/x
  3. Step 3: Cross multiply
    169,256.45x = 253,635.55 × 74,399.78
  4. Step 4: Simplify right side
    169,256.45x = 18,870,429,568.27
  5. Step 5: Solve for x
    x = 18,870,429,568.27/169,256.45
  6. Step 6: Final answer
    x = 111,490.16

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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.