Home / 163,789.20-245,476.40-79,568.64

Finding the Fourth Proportional to 163,789.20, 245,476.40 and 79,568.64

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Solution

The fourth proportional to 163,789.20, 245,476.40 and 79,568.64 is: 119,252.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,789.20 : 245,476.40 = 79,568.64 : x
  2. Step 2: Convert to fraction form
    163,789.20/245,476.40 = 79,568.64/x
  3. Step 3: Cross multiply
    163,789.20x = 245,476.40 × 79,568.64
  4. Step 4: Simplify right side
    163,789.20x = 19,532,223,300.10
  5. Step 5: Solve for x
    x = 19,532,223,300.10/163,789.20
  6. Step 6: Final answer
    x = 119,252.21

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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.