Home / 122,086.20-183,129.30-77,908.80

Finding the Fourth Proportional to 122,086.20, 183,129.30 and 77,908.80

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Solution

The fourth proportional to 122,086.20, 183,129.30 and 77,908.80 is: 116,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,086.20 : 183,129.30 = 77,908.80 : x
  2. Step 2: Convert to fraction form
    122,086.20/183,129.30 = 77,908.80/x
  3. Step 3: Cross multiply
    122,086.20x = 183,129.30 × 77,908.80
  4. Step 4: Simplify right side
    122,086.20x = 14,267,384,007.84
  5. Step 5: Solve for x
    x = 14,267,384,007.84/122,086.20
  6. Step 6: Final answer
    x = 116,863.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.