Home / 188,520.72-260,163.56-103,639.92

Finding the Fourth Proportional to 188,520.72, 260,163.56 and 103,639.92

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Solution

The fourth proportional to 188,520.72, 260,163.56 and 103,639.92 is: 143,025.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,520.72 : 260,163.56 = 103,639.92 : x
  2. Step 2: Convert to fraction form
    188,520.72/260,163.56 = 103,639.92/x
  3. Step 3: Cross multiply
    188,520.72x = 260,163.56 × 103,639.92
  4. Step 4: Simplify right side
    188,520.72x = 26,963,330,545.32
  5. Step 5: Solve for x
    x = 26,963,330,545.32/188,520.72
  6. Step 6: Final answer
    x = 143,025.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.