Home / 145,890.72-218,441.34-75,622.32

Finding the Fourth Proportional to 145,890.72, 218,441.34 and 75,622.32

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Solution

The fourth proportional to 145,890.72, 218,441.34 and 75,622.32 is: 113,228.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,890.72 : 218,441.34 = 75,622.32 : x
  2. Step 2: Convert to fraction form
    145,890.72/218,441.34 = 75,622.32/x
  3. Step 3: Cross multiply
    145,890.72x = 218,441.34 × 75,622.32
  4. Step 4: Simplify right side
    145,890.72x = 16,519,040,914.71
  5. Step 5: Solve for x
    x = 16,519,040,914.71/145,890.72
  6. Step 6: Final answer
    x = 113,228.87

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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.