Home / 109,749.48-151,465.50-79,147.86

Finding the Fourth Proportional to 109,749.48, 151,465.50 and 79,147.86

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Solution

The fourth proportional to 109,749.48, 151,465.50 and 79,147.86 is: 109,232.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,749.48 : 151,465.50 = 79,147.86 : x
  2. Step 2: Convert to fraction form
    109,749.48/151,465.50 = 79,147.86/x
  3. Step 3: Cross multiply
    109,749.48x = 151,465.50 × 79,147.86
  4. Step 4: Simplify right side
    109,749.48x = 11,988,170,188.83
  5. Step 5: Solve for x
    x = 11,988,170,188.83/109,749.48
  6. Step 6: Final answer
    x = 109,232.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.