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Finding the Fourth Proportional to 145,644.94, 218,552.33 and 61,399.95

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Solution

The fourth proportional to 145,644.94, 218,552.33 and 61,399.95 is: 92,135.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,644.94 : 218,552.33 = 61,399.95 : x
  2. Step 2: Convert to fraction form
    145,644.94/218,552.33 = 61,399.95/x
  3. Step 3: Cross multiply
    145,644.94x = 218,552.33 × 61,399.95
  4. Step 4: Simplify right side
    145,644.94x = 13,419,102,134.38
  5. Step 5: Solve for x
    x = 13,419,102,134.38/145,644.94
  6. Step 6: Final answer
    x = 92,135.72

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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.