Home / 99,205.41-136,905.89-56,777.61

Finding the Fourth Proportional to 99,205.41, 136,905.89 and 56,777.61

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Solution

The fourth proportional to 99,205.41, 136,905.89 and 56,777.61 is: 78,354.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,205.41 : 136,905.89 = 56,777.61 : x
  2. Step 2: Convert to fraction form
    99,205.41/136,905.89 = 56,777.61/x
  3. Step 3: Cross multiply
    99,205.41x = 136,905.89 × 56,777.61
  4. Step 4: Simplify right side
    99,205.41x = 7,773,188,945.23
  5. Step 5: Solve for x
    x = 7,773,188,945.23/99,205.41
  6. Step 6: Final answer
    x = 78,354.49

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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.