Home / 205,583.10-307,913.85-122,639.10

Finding the Fourth Proportional to 205,583.10, 307,913.85 and 122,639.10

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Solution

The fourth proportional to 205,583.10, 307,913.85 and 122,639.10 is: 183,683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,583.10 : 307,913.85 = 122,639.10 : x
  2. Step 2: Convert to fraction form
    205,583.10/307,913.85 = 122,639.10/x
  3. Step 3: Cross multiply
    205,583.10x = 307,913.85 × 122,639.10
  4. Step 4: Simplify right side
    205,583.10x = 37,762,277,441.54
  5. Step 5: Solve for x
    x = 37,762,277,441.54/205,583.10
  6. Step 6: Final answer
    x = 183,683.76

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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.