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Finding the Fourth Proportional to 145,245.80, 217,868.70 and 115,502.60

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Solution

The fourth proportional to 145,245.80, 217,868.70 and 115,502.60 is: 173,253.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,245.80 : 217,868.70 = 115,502.60 : x
  2. Step 2: Convert to fraction form
    145,245.80/217,868.70 = 115,502.60/x
  3. Step 3: Cross multiply
    145,245.80x = 217,868.70 × 115,502.60
  4. Step 4: Simplify right side
    145,245.80x = 25,164,401,308.62
  5. Step 5: Solve for x
    x = 25,164,401,308.62/145,245.80
  6. Step 6: Final answer
    x = 173,253.90

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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.