Home / 163,785.20-245,470.40-79,564.64

Finding the Fourth Proportional to 163,785.20, 245,470.40 and 79,564.64

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Solution

The fourth proportional to 163,785.20, 245,470.40 and 79,564.64 is: 119,246.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,785.20 : 245,470.40 = 79,564.64 : x
  2. Step 2: Convert to fraction form
    163,785.20/245,470.40 = 79,564.64/x
  3. Step 3: Cross multiply
    163,785.20x = 245,470.40 × 79,564.64
  4. Step 4: Simplify right side
    163,785.20x = 19,530,764,006.66
  5. Step 5: Solve for x
    x = 19,530,764,006.66/163,785.20
  6. Step 6: Final answer
    x = 119,246.21

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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.