Home / 119,128.20-164,389.44-65,412.84

Finding the Fourth Proportional to 119,128.20, 164,389.44 and 65,412.84

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Solution

The fourth proportional to 119,128.20, 164,389.44 and 65,412.84 is: 90,265.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,128.20 : 164,389.44 = 65,412.84 : x
  2. Step 2: Convert to fraction form
    119,128.20/164,389.44 = 65,412.84/x
  3. Step 3: Cross multiply
    119,128.20x = 164,389.44 × 65,412.84
  4. Step 4: Simplify right side
    119,128.20x = 10,753,180,136.41
  5. Step 5: Solve for x
    x = 10,753,180,136.41/119,128.20
  6. Step 6: Final answer
    x = 90,265.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.