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Finding the Fourth Proportional to 120,107.70, 180,010.35 and 60,959.70

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Solution

The fourth proportional to 120,107.70, 180,010.35 and 60,959.70 is: 91,362.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,107.70 : 180,010.35 = 60,959.70 : x
  2. Step 2: Convert to fraction form
    120,107.70/180,010.35 = 60,959.70/x
  3. Step 3: Cross multiply
    120,107.70x = 180,010.35 × 60,959.70
  4. Step 4: Simplify right side
    120,107.70x = 10,973,376,932.90
  5. Step 5: Solve for x
    x = 10,973,376,932.90/120,107.70
  6. Step 6: Final answer
    x = 91,362.81

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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.