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Finding the Fourth Proportional to 205,083.30, 307,624.95 and 125,940.90

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Solution

The fourth proportional to 205,083.30, 307,624.95 and 125,940.90 is: 188,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,083.30 : 307,624.95 = 125,940.90 : x
  2. Step 2: Convert to fraction form
    205,083.30/307,624.95 = 125,940.90/x
  3. Step 3: Cross multiply
    205,083.30x = 307,624.95 × 125,940.90
  4. Step 4: Simplify right side
    205,083.30x = 38,742,563,065.46
  5. Step 5: Solve for x
    x = 38,742,563,065.46/205,083.30
  6. Step 6: Final answer
    x = 188,911.35

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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.