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Finding the Fourth Proportional to 149,898.80, 224,736.98 and 90,720.40

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Solution

The fourth proportional to 149,898.80, 224,736.98 and 90,720.40 is: 136,013.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,898.80 : 224,736.98 = 90,720.40 : x
  2. Step 2: Convert to fraction form
    149,898.80/224,736.98 = 90,720.40/x
  3. Step 3: Cross multiply
    149,898.80x = 224,736.98 × 90,720.40
  4. Step 4: Simplify right side
    149,898.80x = 20,388,228,720.39
  5. Step 5: Solve for x
    x = 20,388,228,720.39/149,898.80
  6. Step 6: Final answer
    x = 136,013.29

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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.