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Finding the Fourth Proportional to 146,389.75, 202,018.13 and 79,321.75

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Solution

The fourth proportional to 146,389.75, 202,018.13 and 79,321.75 is: 109,464.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,389.75 : 202,018.13 = 79,321.75 : x
  2. Step 2: Convert to fraction form
    146,389.75/202,018.13 = 79,321.75/x
  3. Step 3: Cross multiply
    146,389.75x = 202,018.13 × 79,321.75
  4. Step 4: Simplify right side
    146,389.75x = 16,024,431,603.33
  5. Step 5: Solve for x
    x = 16,024,431,603.33/146,389.75
  6. Step 6: Final answer
    x = 109,464.16

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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.