Home / 204,875.84-307,313.40-80,129.36

Finding the Fourth Proportional to 204,875.84, 307,313.40 and 80,129.36

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Solution

The fourth proportional to 204,875.84, 307,313.40 and 80,129.36 is: 120,193.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,875.84 : 307,313.40 = 80,129.36 : x
  2. Step 2: Convert to fraction form
    204,875.84/307,313.40 = 80,129.36/x
  3. Step 3: Cross multiply
    204,875.84x = 307,313.40 × 80,129.36
  4. Step 4: Simplify right side
    204,875.84x = 24,624,826,061.42
  5. Step 5: Solve for x
    x = 24,624,826,061.42/204,875.84
  6. Step 6: Final answer
    x = 120,193.90

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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.