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Finding the Fourth Proportional to 111,998.88, 168,056.64 and 45,488.16

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Solution

The fourth proportional to 111,998.88, 168,056.64 and 45,488.16 is: 68,255.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,998.88 : 168,056.64 = 45,488.16 : x
  2. Step 2: Convert to fraction form
    111,998.88/168,056.64 = 45,488.16/x
  3. Step 3: Cross multiply
    111,998.88x = 168,056.64 × 45,488.16
  4. Step 4: Simplify right side
    111,998.88x = 7,644,587,329.38
  5. Step 5: Solve for x
    x = 7,644,587,329.38/111,998.88
  6. Step 6: Final answer
    x = 68,255.93

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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.