Home / 255,581.76-383,429.04-78,102.62

Finding the Fourth Proportional to 255,581.76, 383,429.04 and 78,102.62

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Solution

The fourth proportional to 255,581.76, 383,429.04 and 78,102.62 is: 117,171.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,581.76 : 383,429.04 = 78,102.62 : x
  2. Step 2: Convert to fraction form
    255,581.76/383,429.04 = 78,102.62/x
  3. Step 3: Cross multiply
    255,581.76x = 383,429.04 × 78,102.62
  4. Step 4: Simplify right side
    255,581.76x = 29,946,812,608.08
  5. Step 5: Solve for x
    x = 29,946,812,608.08/255,581.76
  6. Step 6: Final answer
    x = 117,171.17

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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.