Home / 142,848.37-197,132.97-78,323.49

Finding the Fourth Proportional to 142,848.37, 197,132.97 and 78,323.49

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Solution

The fourth proportional to 142,848.37, 197,132.97 and 78,323.49 is: 108,087.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,848.37 : 197,132.97 = 78,323.49 : x
  2. Step 2: Convert to fraction form
    142,848.37/197,132.97 = 78,323.49/x
  3. Step 3: Cross multiply
    142,848.37x = 197,132.97 × 78,323.49
  4. Step 4: Simplify right side
    142,848.37x = 15,440,143,164.62
  5. Step 5: Solve for x
    x = 15,440,143,164.62/142,848.37
  6. Step 6: Final answer
    x = 108,087.64

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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.