Home / 99,105.57-136,765.78-53,783.56

Finding the Fourth Proportional to 99,105.57, 136,765.78 and 53,783.56

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Solution

The fourth proportional to 99,105.57, 136,765.78 and 53,783.56 is: 74,221.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,105.57 : 136,765.78 = 53,783.56 : x
  2. Step 2: Convert to fraction form
    99,105.57/136,765.78 = 53,783.56/x
  3. Step 3: Cross multiply
    99,105.57x = 136,765.78 × 53,783.56
  4. Step 4: Simplify right side
    99,105.57x = 7,355,750,534.58
  5. Step 5: Solve for x
    x = 7,355,750,534.58/99,105.57
  6. Step 6: Final answer
    x = 74,221.36

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1.5x scale

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.