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Finding the Fourth Proportional to 85,004.10, 127,506.15 and 75,672.90

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Solution

The fourth proportional to 85,004.10, 127,506.15 and 75,672.90 is: 113,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,004.10 : 127,506.15 = 75,672.90 : x
  2. Step 2: Convert to fraction form
    85,004.10/127,506.15 = 75,672.90/x
  3. Step 3: Cross multiply
    85,004.10x = 127,506.15 × 75,672.90
  4. Step 4: Simplify right side
    85,004.10x = 9,648,760,138.34
  5. Step 5: Solve for x
    x = 9,648,760,138.34/85,004.10
  6. Step 6: Final answer
    x = 113,509.35

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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.