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Finding the Fourth Proportional to 145,388.66, 218,082.74 and 45,556.52

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Solution

The fourth proportional to 145,388.66, 218,082.74 and 45,556.52 is: 68,334.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,388.66 : 218,082.74 = 45,556.52 : x
  2. Step 2: Convert to fraction form
    145,388.66/218,082.74 = 45,556.52/x
  3. Step 3: Cross multiply
    145,388.66x = 218,082.74 × 45,556.52
  4. Step 4: Simplify right side
    145,388.66x = 9,935,089,388.27
  5. Step 5: Solve for x
    x = 9,935,089,388.27/145,388.66
  6. Step 6: Final answer
    x = 68,334.69

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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.