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Finding the Fourth Proportional to 85,107.34, 127,541.54 and 67,259.54

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Solution

The fourth proportional to 85,107.34, 127,541.54 and 67,259.54 is: 100,794.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,107.34 : 127,541.54 = 67,259.54 : x
  2. Step 2: Convert to fraction form
    85,107.34/127,541.54 = 67,259.54/x
  3. Step 3: Cross multiply
    85,107.34x = 127,541.54 × 67,259.54
  4. Step 4: Simplify right side
    85,107.34x = 8,578,385,419.96
  5. Step 5: Solve for x
    x = 8,578,385,419.96/85,107.34
  6. Step 6: Final answer
    x = 100,794.89

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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.