Home / 128,732.11-193,071.77-48,742.49

Finding the Fourth Proportional to 128,732.11, 193,071.77 and 48,742.49

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Solution

The fourth proportional to 128,732.11, 193,071.77 and 48,742.49 is: 73,103.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,732.11 : 193,071.77 = 48,742.49 : x
  2. Step 2: Convert to fraction form
    128,732.11/193,071.77 = 48,742.49/x
  3. Step 3: Cross multiply
    128,732.11x = 193,071.77 × 48,742.49
  4. Step 4: Simplify right side
    128,732.11x = 9,410,798,563.72
  5. Step 5: Solve for x
    x = 9,410,798,563.72/128,732.11
  6. Step 6: Final answer
    x = 73,103.74

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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.