Home / 131,686.08-181,567.20-91,433.28

Finding the Fourth Proportional to 131,686.08, 181,567.20 and 91,433.28

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Solution

The fourth proportional to 131,686.08, 181,567.20 and 91,433.28 is: 126,067.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,686.08 : 181,567.20 = 91,433.28 : x
  2. Step 2: Convert to fraction form
    131,686.08/181,567.20 = 91,433.28/x
  3. Step 3: Cross multiply
    131,686.08x = 181,567.20 × 91,433.28
  4. Step 4: Simplify right side
    131,686.08x = 16,601,284,636.42
  5. Step 5: Solve for x
    x = 16,601,284,636.42/131,686.08
  6. Step 6: Final answer
    x = 126,067.12

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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.