Home / 117,776.80-162,517.20-79,619.35

Finding the Fourth Proportional to 117,776.80, 162,517.20 and 79,619.35

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Solution

The fourth proportional to 117,776.80, 162,517.20 and 79,619.35 is: 109,864.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,776.80 : 162,517.20 = 79,619.35 : x
  2. Step 2: Convert to fraction form
    117,776.80/162,517.20 = 79,619.35/x
  3. Step 3: Cross multiply
    117,776.80x = 162,517.20 × 79,619.35
  4. Step 4: Simplify right side
    117,776.80x = 12,939,513,827.82
  5. Step 5: Solve for x
    x = 12,939,513,827.82/117,776.80
  6. Step 6: Final answer
    x = 109,864.71

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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.