Home / 99,102.82-136,762.25-53,780.79

Finding the Fourth Proportional to 99,102.82, 136,762.25 and 53,780.79

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Solution

The fourth proportional to 99,102.82, 136,762.25 and 53,780.79 is: 74,217.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,102.82 : 136,762.25 = 53,780.79 : x
  2. Step 2: Convert to fraction form
    99,102.82/136,762.25 = 53,780.79/x
  3. Step 3: Cross multiply
    99,102.82x = 136,762.25 × 53,780.79
  4. Step 4: Simplify right side
    99,102.82x = 7,355,181,847.18
  5. Step 5: Solve for x
    x = 7,355,181,847.18/99,102.82
  6. Step 6: Final answer
    x = 74,217.68

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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.