Home / 120,282.25-180,390.48-66,908.47

Finding the Fourth Proportional to 120,282.25, 180,390.48 and 66,908.47

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Solution

The fourth proportional to 120,282.25, 180,390.48 and 66,908.47 is: 100,344.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,282.25 : 180,390.48 = 66,908.47 : x
  2. Step 2: Convert to fraction form
    120,282.25/180,390.48 = 66,908.47/x
  3. Step 3: Cross multiply
    120,282.25x = 180,390.48 × 66,908.47
  4. Step 4: Simplify right side
    120,282.25x = 12,069,651,019.37
  5. Step 5: Solve for x
    x = 12,069,651,019.37/120,282.25
  6. Step 6: Final answer
    x = 100,344.41

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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.