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Finding the Fourth Proportional to 120,719.16, 181,017.90 and 41,812.20

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Solution

The fourth proportional to 120,719.16, 181,017.90 and 41,812.20 is: 62,697.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,719.16 : 181,017.90 = 41,812.20 : x
  2. Step 2: Convert to fraction form
    120,719.16/181,017.90 = 41,812.20/x
  3. Step 3: Cross multiply
    120,719.16x = 181,017.90 × 41,812.20
  4. Step 4: Simplify right side
    120,719.16x = 7,568,756,638.38
  5. Step 5: Solve for x
    x = 7,568,756,638.38/120,719.16
  6. Step 6: Final answer
    x = 62,697.23

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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.