Home / 117,856.80-162,633.78-66,880.32

Finding the Fourth Proportional to 117,856.80, 162,633.78 and 66,880.32

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Solution

The fourth proportional to 117,856.80, 162,633.78 and 66,880.32 is: 92,289.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,856.80 : 162,633.78 = 66,880.32 : x
  2. Step 2: Convert to fraction form
    117,856.80/162,633.78 = 66,880.32/x
  3. Step 3: Cross multiply
    117,856.80x = 162,633.78 × 66,880.32
  4. Step 4: Simplify right side
    117,856.80x = 10,876,999,249.21
  5. Step 5: Solve for x
    x = 10,876,999,249.21/117,856.80
  6. Step 6: Final answer
    x = 92,289.96

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1.5x scale

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.