Home / 145,489.46-218,350.83-75,388.82

Finding the Fourth Proportional to 145,489.46, 218,350.83 and 75,388.82

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Solution

The fourth proportional to 145,489.46, 218,350.83 and 75,388.82 is: 113,143.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,489.46 : 218,350.83 = 75,388.82 : x
  2. Step 2: Convert to fraction form
    145,489.46/218,350.83 = 75,388.82/x
  3. Step 3: Cross multiply
    145,489.46x = 218,350.83 × 75,388.82
  4. Step 4: Simplify right side
    145,489.46x = 16,461,211,419.72
  5. Step 5: Solve for x
    x = 16,461,211,419.72/145,489.46
  6. Step 6: Final answer
    x = 113,143.67

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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.