Home / 181,979.60-251,121.48-100,291.64

Finding the Fourth Proportional to 181,979.60, 251,121.48 and 100,291.64

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Solution

The fourth proportional to 181,979.60, 251,121.48 and 100,291.64 is: 138,396.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,979.60 : 251,121.48 = 100,291.64 : x
  2. Step 2: Convert to fraction form
    181,979.60/251,121.48 = 100,291.64/x
  3. Step 3: Cross multiply
    181,979.60x = 251,121.48 × 100,291.64
  4. Step 4: Simplify right side
    181,979.60x = 25,185,385,068.43
  5. Step 5: Solve for x
    x = 25,185,385,068.43/181,979.60
  6. Step 6: Final answer
    x = 138,396.75

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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.