Home / 68,100.16-102,150.32-21,356.80

Finding the Fourth Proportional to 68,100.16, 102,150.32 and 21,356.80

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Solution

The fourth proportional to 68,100.16, 102,150.32 and 21,356.80 is: 32,035.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,100.16 : 102,150.32 = 21,356.80 : x
  2. Step 2: Convert to fraction form
    68,100.16/102,150.32 = 21,356.80/x
  3. Step 3: Cross multiply
    68,100.16x = 102,150.32 × 21,356.80
  4. Step 4: Simplify right side
    68,100.16x = 2,181,603,954.18
  5. Step 5: Solve for x
    x = 2,181,603,954.18/68,100.16
  6. Step 6: Final answer
    x = 32,035.23

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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.