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Finding the Fourth Proportional to 145,385.69, 218,078.46 and 45,553.73

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Solution

The fourth proportional to 145,385.69, 218,078.46 and 45,553.73 is: 68,330.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,385.69 : 218,078.46 = 45,553.73 : x
  2. Step 2: Convert to fraction form
    145,385.69/218,078.46 = 45,553.73/x
  3. Step 3: Cross multiply
    145,385.69x = 218,078.46 × 45,553.73
  4. Step 4: Simplify right side
    145,385.69x = 9,934,286,195.26
  5. Step 5: Solve for x
    x = 9,934,286,195.26/145,385.69
  6. Step 6: Final answer
    x = 68,330.57

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1.5x scale

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.