Home / 165,078.12-227,297.72-128,925.60

Finding the Fourth Proportional to 165,078.12, 227,297.72 and 128,925.60

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Solution

The fourth proportional to 165,078.12, 227,297.72 and 128,925.60 is: 177,518.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,078.12 : 227,297.72 = 128,925.60 : x
  2. Step 2: Convert to fraction form
    165,078.12/227,297.72 = 128,925.60/x
  3. Step 3: Cross multiply
    165,078.12x = 227,297.72 × 128,925.60
  4. Step 4: Simplify right side
    165,078.12x = 29,304,494,929.63
  5. Step 5: Solve for x
    x = 29,304,494,929.63/165,078.12
  6. Step 6: Final answer
    x = 177,518.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.