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Finding the Fourth Proportional to 117,680.40, 176,520.60 and 109,040.40

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Solution

The fourth proportional to 117,680.40, 176,520.60 and 109,040.40 is: 163,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,680.40 : 176,520.60 = 109,040.40 : x
  2. Step 2: Convert to fraction form
    117,680.40/176,520.60 = 109,040.40/x
  3. Step 3: Cross multiply
    117,680.40x = 176,520.60 × 109,040.40
  4. Step 4: Simplify right side
    117,680.40x = 19,247,876,832.24
  5. Step 5: Solve for x
    x = 19,247,876,832.24/117,680.40
  6. Step 6: Final answer
    x = 163,560.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.