Home / 128,826.47-193,149.15-56,745.17

Finding the Fourth Proportional to 128,826.47, 193,149.15 and 56,745.17

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Solution

The fourth proportional to 128,826.47, 193,149.15 and 56,745.17 is: 85,077.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,826.47 : 193,149.15 = 56,745.17 : x
  2. Step 2: Convert to fraction form
    128,826.47/193,149.15 = 56,745.17/x
  3. Step 3: Cross multiply
    128,826.47x = 193,149.15 × 56,745.17
  4. Step 4: Simplify right side
    128,826.47x = 10,960,281,352.11
  5. Step 5: Solve for x
    x = 10,960,281,352.11/128,826.47
  6. Step 6: Final answer
    x = 85,077.87

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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.