Home / 145,388.20-218,081.58-38,771.92

Finding the Fourth Proportional to 145,388.20, 218,081.58 and 38,771.92

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Solution

The fourth proportional to 145,388.20, 218,081.58 and 38,771.92 is: 58,157.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,388.20 : 218,081.58 = 38,771.92 : x
  2. Step 2: Convert to fraction form
    145,388.20/218,081.58 = 38,771.92/x
  3. Step 3: Cross multiply
    145,388.20x = 218,081.58 × 38,771.92
  4. Step 4: Simplify right side
    145,388.20x = 8,455,441,573.23
  5. Step 5: Solve for x
    x = 8,455,441,573.23/145,388.20
  6. Step 6: Final answer
    x = 58,157.69

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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.