Home / 120,557.17-180,844.41-31,809.64

Finding the Fourth Proportional to 120,557.17, 180,844.41 and 31,809.64

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Solution

The fourth proportional to 120,557.17, 180,844.41 and 31,809.64 is: 47,716.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,557.17 : 180,844.41 = 31,809.64 : x
  2. Step 2: Convert to fraction form
    120,557.17/180,844.41 = 31,809.64/x
  3. Step 3: Cross multiply
    120,557.17x = 180,844.41 × 31,809.64
  4. Step 4: Simplify right side
    120,557.17x = 5,752,595,578.11
  5. Step 5: Solve for x
    x = 5,752,595,578.11/120,557.17
  6. Step 6: Final answer
    x = 47,716.74

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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.