Home / 104,361.05-156,538.49-90,279.50

Finding the Fourth Proportional to 104,361.05, 156,538.49 and 90,279.50

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Solution

The fourth proportional to 104,361.05, 156,538.49 and 90,279.50 is: 135,416.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,361.05 : 156,538.49 = 90,279.50 : x
  2. Step 2: Convert to fraction form
    104,361.05/156,538.49 = 90,279.50/x
  3. Step 3: Cross multiply
    104,361.05x = 156,538.49 × 90,279.50
  4. Step 4: Simplify right side
    104,361.05x = 14,132,217,225.00
  5. Step 5: Solve for x
    x = 14,132,217,225.00/104,361.05
  6. Step 6: Final answer
    x = 135,416.58

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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.