Home / 99,685.08-149,571.36-68,571.36

Finding the Fourth Proportional to 99,685.08, 149,571.36 and 68,571.36

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Solution

The fourth proportional to 99,685.08, 149,571.36 and 68,571.36 is: 102,887.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,685.08 : 149,571.36 = 68,571.36 : x
  2. Step 2: Convert to fraction form
    99,685.08/149,571.36 = 68,571.36/x
  3. Step 3: Cross multiply
    99,685.08x = 149,571.36 × 68,571.36
  4. Step 4: Simplify right side
    99,685.08x = 10,256,311,572.25
  5. Step 5: Solve for x
    x = 10,256,311,572.25/99,685.08
  6. Step 6: Final answer
    x = 102,887.13

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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.