Home / 142,658.46-196,868.67-78,996.30

Finding the Fourth Proportional to 142,658.46, 196,868.67 and 78,996.30

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Solution

The fourth proportional to 142,658.46, 196,868.67 and 78,996.30 is: 109,014.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,658.46 : 196,868.67 = 78,996.30 : x
  2. Step 2: Convert to fraction form
    142,658.46/196,868.67 = 78,996.30/x
  3. Step 3: Cross multiply
    142,658.46x = 196,868.67 × 78,996.30
  4. Step 4: Simplify right side
    142,658.46x = 15,551,896,515.92
  5. Step 5: Solve for x
    x = 15,551,896,515.92/142,658.46
  6. Step 6: Final answer
    x = 109,014.89

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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.