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Finding the Fourth Proportional to 145,091.70, 218,123.55 and 125,846.10

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Solution

The fourth proportional to 145,091.70, 218,123.55 and 125,846.10 is: 189,190.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,091.70 : 218,123.55 = 125,846.10 : x
  2. Step 2: Convert to fraction form
    145,091.70/218,123.55 = 125,846.10/x
  3. Step 3: Cross multiply
    145,091.70x = 218,123.55 × 125,846.10
  4. Step 4: Simplify right side
    145,091.70x = 27,449,998,085.66
  5. Step 5: Solve for x
    x = 27,449,998,085.66/145,091.70
  6. Step 6: Final answer
    x = 189,190.68

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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.