Home / 112,121.76-167,992.32-67,655.08

Finding the Fourth Proportional to 112,121.76, 167,992.32 and 67,655.08

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Solution

The fourth proportional to 112,121.76, 167,992.32 and 67,655.08 is: 101,367.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,121.76 : 167,992.32 = 67,655.08 : x
  2. Step 2: Convert to fraction form
    112,121.76/167,992.32 = 67,655.08/x
  3. Step 3: Cross multiply
    112,121.76x = 167,992.32 × 67,655.08
  4. Step 4: Simplify right side
    112,121.76x = 11,365,533,009.02
  5. Step 5: Solve for x
    x = 11,365,533,009.02/112,121.76
  6. Step 6: Final answer
    x = 101,367.77

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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.