Home / 120,086.36-180,132.62-56,891.68

Finding the Fourth Proportional to 120,086.36, 180,132.62 and 56,891.68

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Solution

The fourth proportional to 120,086.36, 180,132.62 and 56,891.68 is: 85,338.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,086.36 : 180,132.62 = 56,891.68 : x
  2. Step 2: Convert to fraction form
    120,086.36/180,132.62 = 56,891.68/x
  3. Step 3: Cross multiply
    120,086.36x = 180,132.62 × 56,891.68
  4. Step 4: Simplify right side
    120,086.36x = 10,248,047,374.60
  5. Step 5: Solve for x
    x = 10,248,047,374.60/120,086.36
  6. Step 6: Final answer
    x = 85,338.98

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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.