Home / 99,163.08-136,751.26-65,111.50

Finding the Fourth Proportional to 99,163.08, 136,751.26 and 65,111.50

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Solution

The fourth proportional to 99,163.08, 136,751.26 and 65,111.50 is: 89,792.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,163.08 : 136,751.26 = 65,111.50 : x
  2. Step 2: Convert to fraction form
    99,163.08/136,751.26 = 65,111.50/x
  3. Step 3: Cross multiply
    99,163.08x = 136,751.26 × 65,111.50
  4. Step 4: Simplify right side
    99,163.08x = 8,904,079,665.49
  5. Step 5: Solve for x
    x = 8,904,079,665.49/99,163.08
  6. Step 6: Final answer
    x = 89,792.29

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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.