Home / 142,135.46-196,147.06-78,473.26

Finding the Fourth Proportional to 142,135.46, 196,147.06 and 78,473.26

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Solution

The fourth proportional to 142,135.46, 196,147.06 and 78,473.26 is: 108,293.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,135.46 : 196,147.06 = 78,473.26 : x
  2. Step 2: Convert to fraction form
    142,135.46/196,147.06 = 78,473.26/x
  3. Step 3: Cross multiply
    142,135.46x = 196,147.06 × 78,473.26
  4. Step 4: Simplify right side
    142,135.46x = 15,392,299,237.62
  5. Step 5: Solve for x
    x = 15,392,299,237.62/142,135.46
  6. Step 6: Final answer
    x = 108,293.17

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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.