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Finding the Fourth Proportional to 120,356.52, 180,415.62 and 57,065.64

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Solution

The fourth proportional to 120,356.52, 180,415.62 and 57,065.64 is: 85,541.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,356.52 : 180,415.62 = 57,065.64 : x
  2. Step 2: Convert to fraction form
    120,356.52/180,415.62 = 57,065.64/x
  3. Step 3: Cross multiply
    120,356.52x = 180,415.62 × 57,065.64
  4. Step 4: Simplify right side
    120,356.52x = 10,295,532,821.30
  5. Step 5: Solve for x
    x = 10,295,532,821.30/120,356.52
  6. Step 6: Final answer
    x = 85,541.96

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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.