Home / 103,202.82-142,425.65-77,663.25

Finding the Fourth Proportional to 103,202.82, 142,425.65 and 77,663.25

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Solution

The fourth proportional to 103,202.82, 142,425.65 and 77,663.25 is: 107,179.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,202.82 : 142,425.65 = 77,663.25 : x
  2. Step 2: Convert to fraction form
    103,202.82/142,425.65 = 77,663.25/x
  3. Step 3: Cross multiply
    103,202.82x = 142,425.65 × 77,663.25
  4. Step 4: Simplify right side
    103,202.82x = 11,061,238,474.05
  5. Step 5: Solve for x
    x = 11,061,238,474.05/103,202.82
  6. Step 6: Final answer
    x = 107,179.61

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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.