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Finding the Fourth Proportional to 188,442.86, 260,067.11 and 128,147.27

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Solution

The fourth proportional to 188,442.86, 260,067.11 and 128,147.27 is: 176,854.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,442.86 : 260,067.11 = 128,147.27 : x
  2. Step 2: Convert to fraction form
    188,442.86/260,067.11 = 128,147.27/x
  3. Step 3: Cross multiply
    188,442.86x = 260,067.11 × 128,147.27
  4. Step 4: Simplify right side
    188,442.86x = 33,326,888,222.22
  5. Step 5: Solve for x
    x = 33,326,888,222.22/188,442.86
  6. Step 6: Final answer
    x = 176,854.08

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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.