Home / 120,458.24-180,698.52-31,712.12

Finding the Fourth Proportional to 120,458.24, 180,698.52 and 31,712.12

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Solution

The fourth proportional to 120,458.24, 180,698.52 and 31,712.12 is: 47,571.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,458.24 : 180,698.52 = 31,712.12 : x
  2. Step 2: Convert to fraction form
    120,458.24/180,698.52 = 31,712.12/x
  3. Step 3: Cross multiply
    120,458.24x = 180,698.52 × 31,712.12
  4. Step 4: Simplify right side
    120,458.24x = 5,730,333,150.06
  5. Step 5: Solve for x
    x = 5,730,333,150.06/120,458.24
  6. Step 6: Final answer
    x = 47,571.12

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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.