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Finding the Fourth Proportional to 145,404.67, 218,107.06 and 45,572.61

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Solution

The fourth proportional to 145,404.67, 218,107.06 and 45,572.61 is: 68,358.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,404.67 : 218,107.06 = 45,572.61 : x
  2. Step 2: Convert to fraction form
    145,404.67/218,107.06 = 45,572.61/x
  3. Step 3: Cross multiply
    145,404.67x = 218,107.06 × 45,572.61
  4. Step 4: Simplify right side
    145,404.67x = 9,939,707,755.76
  5. Step 5: Solve for x
    x = 9,939,707,755.76/145,404.67
  6. Step 6: Final answer
    x = 68,358.93

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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.