Home / 163,629.90-245,335.50-132,078.78

Finding the Fourth Proportional to 163,629.90, 245,335.50 and 132,078.78

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Solution

The fourth proportional to 163,629.90, 245,335.50 and 132,078.78 is: 198,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,629.90 : 245,335.50 = 132,078.78 : x
  2. Step 2: Convert to fraction form
    163,629.90/245,335.50 = 132,078.78/x
  3. Step 3: Cross multiply
    163,629.90x = 245,335.50 × 132,078.78
  4. Step 4: Simplify right side
    163,629.90x = 32,403,613,530.69
  5. Step 5: Solve for x
    x = 32,403,613,530.69/163,629.90
  6. Step 6: Final answer
    x = 198,029.90

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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.