Home / 205,128.48-307,096.82-119,478.18

Finding the Fourth Proportional to 205,128.48, 307,096.82 and 119,478.18

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Solution

The fourth proportional to 205,128.48, 307,096.82 and 119,478.18 is: 178,870.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,128.48 : 307,096.82 = 119,478.18 : x
  2. Step 2: Convert to fraction form
    205,128.48/307,096.82 = 119,478.18/x
  3. Step 3: Cross multiply
    205,128.48x = 307,096.82 × 119,478.18
  4. Step 4: Simplify right side
    205,128.48x = 36,691,369,137.39
  5. Step 5: Solve for x
    x = 36,691,369,137.39/205,128.48
  6. Step 6: Final answer
    x = 178,870.18

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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.