Home / 117,619.35-162,261.79-79,366.29

Finding the Fourth Proportional to 117,619.35, 162,261.79 and 79,366.29

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Solution

The fourth proportional to 117,619.35, 162,261.79 and 79,366.29 is: 109,489.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,619.35 : 162,261.79 = 79,366.29 : x
  2. Step 2: Convert to fraction form
    117,619.35/162,261.79 = 79,366.29/x
  3. Step 3: Cross multiply
    117,619.35x = 162,261.79 × 79,366.29
  4. Step 4: Simplify right side
    117,619.35x = 12,878,116,281.06
  5. Step 5: Solve for x
    x = 12,878,116,281.06/117,619.35
  6. Step 6: Final answer
    x = 109,489.78

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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.