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Finding the Fourth Proportional to 111,832.78, 154,317.68 and 63,424.90

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Solution

The fourth proportional to 111,832.78, 154,317.68 and 63,424.90 is: 87,519.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,832.78 : 154,317.68 = 63,424.90 : x
  2. Step 2: Convert to fraction form
    111,832.78/154,317.68 = 63,424.90/x
  3. Step 3: Cross multiply
    111,832.78x = 154,317.68 × 63,424.90
  4. Step 4: Simplify right side
    111,832.78x = 9,787,583,280.21
  5. Step 5: Solve for x
    x = 9,787,583,280.21/111,832.78
  6. Step 6: Final answer
    x = 87,519.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.