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Finding the Fourth Proportional to 145,404.98, 218,107.56 and 45,572.96

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Solution

The fourth proportional to 145,404.98, 218,107.56 and 45,572.96 is: 68,359.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,404.98 : 218,107.56 = 45,572.96 : x
  2. Step 2: Convert to fraction form
    145,404.98/218,107.56 = 45,572.96/x
  3. Step 3: Cross multiply
    145,404.98x = 218,107.56 × 45,572.96
  4. Step 4: Simplify right side
    145,404.98x = 9,939,807,107.58
  5. Step 5: Solve for x
    x = 9,939,807,107.58/145,404.98
  6. Step 6: Final answer
    x = 68,359.47

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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.