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Finding the Fourth Proportional to 120,007.20, 180,010.80 and 106,528.80

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Solution

The fourth proportional to 120,007.20, 180,010.80 and 106,528.80 is: 159,793.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,007.20 : 180,010.80 = 106,528.80 : x
  2. Step 2: Convert to fraction form
    120,007.20/180,010.80 = 106,528.80/x
  3. Step 3: Cross multiply
    120,007.20x = 180,010.80 × 106,528.80
  4. Step 4: Simplify right side
    120,007.20x = 19,176,334,511.04
  5. Step 5: Solve for x
    x = 19,176,334,511.04/120,007.20
  6. Step 6: Final answer
    x = 159,793.20

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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.