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Finding the Fourth Proportional to 117,995.76, 162,847.44 and 72,664.92

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Solution

The fourth proportional to 117,995.76, 162,847.44 and 72,664.92 is: 100,285.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,995.76 : 162,847.44 = 72,664.92 : x
  2. Step 2: Convert to fraction form
    117,995.76/162,847.44 = 72,664.92/x
  3. Step 3: Cross multiply
    117,995.76x = 162,847.44 × 72,664.92
  4. Step 4: Simplify right side
    117,995.76x = 11,833,296,199.80
  5. Step 5: Solve for x
    x = 11,833,296,199.80/117,995.76
  6. Step 6: Final answer
    x = 100,285.77

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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.