Home / 99,203.12-136,923.90-56,786.12

Finding the Fourth Proportional to 99,203.12, 136,923.90 and 56,786.12

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Solution

The fourth proportional to 99,203.12, 136,923.90 and 56,786.12 is: 78,378.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,203.12 : 136,923.90 = 56,786.12 : x
  2. Step 2: Convert to fraction form
    99,203.12/136,923.90 = 56,786.12/x
  3. Step 3: Cross multiply
    99,203.12x = 136,923.90 × 56,786.12
  4. Step 4: Simplify right side
    99,203.12x = 7,775,377,016.27
  5. Step 5: Solve for x
    x = 7,775,377,016.27/99,203.12
  6. Step 6: Final answer
    x = 78,378.35

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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.