Home / 85,234.20-127,851.30-72,112.20

Finding the Fourth Proportional to 85,234.20, 127,851.30 and 72,112.20

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Solution

The fourth proportional to 85,234.20, 127,851.30 and 72,112.20 is: 108,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,234.20 : 127,851.30 = 72,112.20 : x
  2. Step 2: Convert to fraction form
    85,234.20/127,851.30 = 72,112.20/x
  3. Step 3: Cross multiply
    85,234.20x = 127,851.30 × 72,112.20
  4. Step 4: Simplify right side
    85,234.20x = 9,219,638,515.86
  5. Step 5: Solve for x
    x = 9,219,638,515.86/85,234.20
  6. Step 6: Final answer
    x = 108,168.30

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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.