Home / 128,731.45-193,070.77-48,741.82

Finding the Fourth Proportional to 128,731.45, 193,070.77 and 48,741.82

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Solution

The fourth proportional to 128,731.45, 193,070.77 and 48,741.82 is: 73,102.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,731.45 : 193,070.77 = 48,741.82 : x
  2. Step 2: Convert to fraction form
    128,731.45/193,070.77 = 48,741.82/x
  3. Step 3: Cross multiply
    128,731.45x = 193,070.77 × 48,741.82
  4. Step 4: Simplify right side
    128,731.45x = 9,410,619,753.25
  5. Step 5: Solve for x
    x = 9,410,619,753.25/128,731.45
  6. Step 6: Final answer
    x = 73,102.73

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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.