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Finding the Fourth Proportional to 112,588.96, 169,076.64 and 99,967.20

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Solution

The fourth proportional to 112,588.96, 169,076.64 and 99,967.20 is: 150,122.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,588.96 : 169,076.64 = 99,967.20 : x
  2. Step 2: Convert to fraction form
    112,588.96/169,076.64 = 99,967.20/x
  3. Step 3: Cross multiply
    112,588.96x = 169,076.64 × 99,967.20
  4. Step 4: Simplify right side
    112,588.96x = 16,902,118,286.21
  5. Step 5: Solve for x
    x = 16,902,118,286.21/112,588.96
  6. Step 6: Final answer
    x = 150,122.34

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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.