Home / 120,644.26-181,025.28-85,332.46

Finding the Fourth Proportional to 120,644.26, 181,025.28 and 85,332.46

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Solution

The fourth proportional to 120,644.26, 181,025.28 and 85,332.46 is: 128,040.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,644.26 : 181,025.28 = 85,332.46 : x
  2. Step 2: Convert to fraction form
    120,644.26/181,025.28 = 85,332.46/x
  3. Step 3: Cross multiply
    120,644.26x = 181,025.28 × 85,332.46
  4. Step 4: Simplify right side
    120,644.26x = 15,447,332,464.59
  5. Step 5: Solve for x
    x = 15,447,332,464.59/120,644.26
  6. Step 6: Final answer
    x = 128,040.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.