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Finding the Fourth Proportional to 159,636.84, 239,524.86 and 85,678.44

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Solution

The fourth proportional to 159,636.84, 239,524.86 and 85,678.44 is: 128,555.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,636.84 : 239,524.86 = 85,678.44 : x
  2. Step 2: Convert to fraction form
    159,636.84/239,524.86 = 85,678.44/x
  3. Step 3: Cross multiply
    159,636.84x = 239,524.86 × 85,678.44
  4. Step 4: Simplify right side
    159,636.84x = 20,522,116,346.02
  5. Step 5: Solve for x
    x = 20,522,116,346.02/159,636.84
  6. Step 6: Final answer
    x = 128,555.01

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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.