Home / 142,096.64-196,089.44-78,429.76

Finding the Fourth Proportional to 142,096.64, 196,089.44 and 78,429.76

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Solution

The fourth proportional to 142,096.64, 196,089.44 and 78,429.76 is: 108,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,096.64 : 196,089.44 = 78,429.76 : x
  2. Step 2: Convert to fraction form
    142,096.64/196,089.44 = 78,429.76/x
  3. Step 3: Cross multiply
    142,096.64x = 196,089.44 × 78,429.76
  4. Step 4: Simplify right side
    142,096.64x = 15,379,247,717.73
  5. Step 5: Solve for x
    x = 15,379,247,717.73/142,096.64
  6. Step 6: Final answer
    x = 108,230.90

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1.5x scale

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.