Home / 142,146.48-196,162.92-78,484.44

Finding the Fourth Proportional to 142,146.48, 196,162.92 and 78,484.44

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Solution

The fourth proportional to 142,146.48, 196,162.92 and 78,484.44 is: 108,308.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,146.48 : 196,162.92 = 78,484.44 : x
  2. Step 2: Convert to fraction form
    142,146.48/196,162.92 = 78,484.44/x
  3. Step 3: Cross multiply
    142,146.48x = 196,162.92 × 78,484.44
  4. Step 4: Simplify right side
    142,146.48x = 15,395,736,924.96
  5. Step 5: Solve for x
    x = 15,395,736,924.96/142,146.48
  6. Step 6: Final answer
    x = 108,308.96

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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.