Home / 142,188.62-196,220.41-77,658.75

Finding the Fourth Proportional to 142,188.62, 196,220.41 and 77,658.75

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Solution

The fourth proportional to 142,188.62, 196,220.41 and 77,658.75 is: 107,169.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,188.62 : 196,220.41 = 77,658.75 : x
  2. Step 2: Convert to fraction form
    142,188.62/196,220.41 = 77,658.75/x
  3. Step 3: Cross multiply
    142,188.62x = 196,220.41 × 77,658.75
  4. Step 4: Simplify right side
    142,188.62x = 15,238,231,570.94
  5. Step 5: Solve for x
    x = 15,238,231,570.94/142,188.62
  6. Step 6: Final answer
    x = 107,169.14

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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.