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Finding the Fourth Proportional to 145,814.58, 218,857.95 and 74,790.54

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Solution

The fourth proportional to 145,814.58, 218,857.95 and 74,790.54 is: 112,255.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,814.58 : 218,857.95 = 74,790.54 : x
  2. Step 2: Convert to fraction form
    145,814.58/218,857.95 = 74,790.54/x
  3. Step 3: Cross multiply
    145,814.58x = 218,857.95 × 74,790.54
  4. Step 4: Simplify right side
    145,814.58x = 16,368,504,263.79
  5. Step 5: Solve for x
    x = 16,368,504,263.79/145,814.58
  6. Step 6: Final answer
    x = 112,255.61

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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.