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Finding the Fourth Proportional to 145,164.94, 217,543.20 and 115,450.90

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Solution

The fourth proportional to 145,164.94, 217,543.20 and 115,450.90 is: 173,013.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,164.94 : 217,543.20 = 115,450.90 : x
  2. Step 2: Convert to fraction form
    145,164.94/217,543.20 = 115,450.90/x
  3. Step 3: Cross multiply
    145,164.94x = 217,543.20 × 115,450.90
  4. Step 4: Simplify right side
    145,164.94x = 25,115,558,228.88
  5. Step 5: Solve for x
    x = 25,115,558,228.88/145,164.94
  6. Step 6: Final answer
    x = 173,013.94

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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.