Home / 99,107.22-136,772.10-56,665.74

Finding the Fourth Proportional to 99,107.22, 136,772.10 and 56,665.74

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Solution

The fourth proportional to 99,107.22, 136,772.10 and 56,665.74 is: 78,201.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,107.22 : 136,772.10 = 56,665.74 : x
  2. Step 2: Convert to fraction form
    99,107.22/136,772.10 = 56,665.74/x
  3. Step 3: Cross multiply
    99,107.22x = 136,772.10 × 56,665.74
  4. Step 4: Simplify right side
    99,107.22x = 7,750,292,257.85
  5. Step 5: Solve for x
    x = 7,750,292,257.85/99,107.22
  6. Step 6: Final answer
    x = 78,201.09

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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.