Home / 109,741.40-151,454.28-79,139.66

Finding the Fourth Proportional to 109,741.40, 151,454.28 and 79,139.66

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Solution

The fourth proportional to 109,741.40, 151,454.28 and 79,139.66 is: 109,220.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,741.40 : 151,454.28 = 79,139.66 : x
  2. Step 2: Convert to fraction form
    109,741.40/151,454.28 = 79,139.66/x
  3. Step 3: Cross multiply
    109,741.40x = 151,454.28 × 79,139.66
  4. Step 4: Simplify right side
    109,741.40x = 11,986,040,224.74
  5. Step 5: Solve for x
    x = 11,986,040,224.74/109,741.40
  6. Step 6: Final answer
    x = 109,220.77

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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.