Home / 145,939.20-218,892.60-40,768.80

Finding the Fourth Proportional to 145,939.20, 218,892.60 and 40,768.80

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Solution

The fourth proportional to 145,939.20, 218,892.60 and 40,768.80 is: 61,148.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,939.20 : 218,892.60 = 40,768.80 : x
  2. Step 2: Convert to fraction form
    145,939.20/218,892.60 = 40,768.80/x
  3. Step 3: Cross multiply
    145,939.20x = 218,892.60 × 40,768.80
  4. Step 4: Simplify right side
    145,939.20x = 8,923,988,630.88
  5. Step 5: Solve for x
    x = 8,923,988,630.88/145,939.20
  6. Step 6: Final answer
    x = 61,148.67

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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.