Home / 90,691.47-125,145.63-84,004.11

Finding the Fourth Proportional to 90,691.47, 125,145.63 and 84,004.11

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Solution

The fourth proportional to 90,691.47, 125,145.63 and 84,004.11 is: 115,917.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,691.47 : 125,145.63 = 84,004.11 : x
  2. Step 2: Convert to fraction form
    90,691.47/125,145.63 = 84,004.11/x
  3. Step 3: Cross multiply
    90,691.47x = 125,145.63 × 84,004.11
  4. Step 4: Simplify right side
    90,691.47x = 10,512,747,268.54
  5. Step 5: Solve for x
    x = 10,512,747,268.54/90,691.47
  6. Step 6: Final answer
    x = 115,917.71

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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.