Home / 99,111.22-136,777.62-56,669.74

Finding the Fourth Proportional to 99,111.22, 136,777.62 and 56,669.74

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Solution

The fourth proportional to 99,111.22, 136,777.62 and 56,669.74 is: 78,206.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,111.22 : 136,777.62 = 56,669.74 : x
  2. Step 2: Convert to fraction form
    99,111.22/136,777.62 = 56,669.74/x
  3. Step 3: Cross multiply
    99,111.22x = 136,777.62 × 56,669.74
  4. Step 4: Simplify right side
    99,111.22x = 7,751,152,163.22
  5. Step 5: Solve for x
    x = 7,751,152,163.22/99,111.22
  6. Step 6: Final answer
    x = 78,206.61

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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.