Home / 145,951.20-218,858.78-75,811.68

Finding the Fourth Proportional to 145,951.20, 218,858.78 and 75,811.68

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Solution

The fourth proportional to 145,951.20, 218,858.78 and 75,811.68 is: 113,682.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,951.20 : 218,858.78 = 75,811.68 : x
  2. Step 2: Convert to fraction form
    145,951.20/218,858.78 = 75,811.68/x
  3. Step 3: Cross multiply
    145,951.20x = 218,858.78 × 75,811.68
  4. Step 4: Simplify right side
    145,951.20x = 16,592,051,794.55
  5. Step 5: Solve for x
    x = 16,592,051,794.55/145,951.20
  6. Step 6: Final answer
    x = 113,682.19

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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.