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Finding the Fourth Proportional to 120,639.40, 181,013.10 and 41,810.20

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Solution

The fourth proportional to 120,639.40, 181,013.10 and 41,810.20 is: 62,734.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,639.40 : 181,013.10 = 41,810.20 : x
  2. Step 2: Convert to fraction form
    120,639.40/181,013.10 = 41,810.20/x
  3. Step 3: Cross multiply
    120,639.40x = 181,013.10 × 41,810.20
  4. Step 4: Simplify right side
    120,639.40x = 7,568,193,913.62
  5. Step 5: Solve for x
    x = 7,568,193,913.62/120,639.40
  6. Step 6: Final answer
    x = 62,734.01

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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.