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Finding the Fourth Proportional to 111,278.67, 166,918.21 and 27,038.90

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Solution

The fourth proportional to 111,278.67, 166,918.21 and 27,038.90 is: 40,558.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,278.67 : 166,918.21 = 27,038.90 : x
  2. Step 2: Convert to fraction form
    111,278.67/166,918.21 = 27,038.90/x
  3. Step 3: Cross multiply
    111,278.67x = 166,918.21 × 27,038.90
  4. Step 4: Simplify right side
    111,278.67x = 4,513,284,875.79
  5. Step 5: Solve for x
    x = 4,513,284,875.79/111,278.67
  6. Step 6: Final answer
    x = 40,558.40

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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.