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Finding the Fourth Proportional to 109,000.32, 150,420.96 and 63,680.88

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Solution

The fourth proportional to 109,000.32, 150,420.96 and 63,680.88 is: 87,879.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,000.32 : 150,420.96 = 63,680.88 : x
  2. Step 2: Convert to fraction form
    109,000.32/150,420.96 = 63,680.88/x
  3. Step 3: Cross multiply
    109,000.32x = 150,420.96 × 63,680.88
  4. Step 4: Simplify right side
    109,000.32x = 9,578,939,103.24
  5. Step 5: Solve for x
    x = 9,578,939,103.24/109,000.32
  6. Step 6: Final answer
    x = 87,879.92

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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.