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Finding the Fourth Proportional to 101,642.31, 140,289.80 and 67,652.15

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Solution

The fourth proportional to 101,642.31, 140,289.80 and 67,652.15 is: 93,375.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,642.31 : 140,289.80 = 67,652.15 : x
  2. Step 2: Convert to fraction form
    101,642.31/140,289.80 = 67,652.15/x
  3. Step 3: Cross multiply
    101,642.31x = 140,289.80 × 67,652.15
  4. Step 4: Simplify right side
    101,642.31x = 9,490,905,553.36
  5. Step 5: Solve for x
    x = 9,490,905,553.36/101,642.31
  6. Step 6: Final answer
    x = 93,375.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.