Home / 120,918.57-181,378.28-36,679.46

Finding the Fourth Proportional to 120,918.57, 181,378.28 and 36,679.46

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Solution

The fourth proportional to 120,918.57, 181,378.28 and 36,679.46 is: 55,019.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,918.57 : 181,378.28 = 36,679.46 : x
  2. Step 2: Convert to fraction form
    120,918.57/181,378.28 = 36,679.46/x
  3. Step 3: Cross multiply
    120,918.57x = 181,378.28 × 36,679.46
  4. Step 4: Simplify right side
    120,918.57x = 6,652,856,275.84
  5. Step 5: Solve for x
    x = 6,652,856,275.84/120,918.57
  6. Step 6: Final answer
    x = 55,019.31

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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.