Home / 122,932.20-183,960.90-85,315.80

Finding the Fourth Proportional to 122,932.20, 183,960.90 and 85,315.80

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Solution

The fourth proportional to 122,932.20, 183,960.90 and 85,315.80 is: 127,670.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,932.20 : 183,960.90 = 85,315.80 : x
  2. Step 2: Convert to fraction form
    122,932.20/183,960.90 = 85,315.80/x
  3. Step 3: Cross multiply
    122,932.20x = 183,960.90 × 85,315.80
  4. Step 4: Simplify right side
    122,932.20x = 15,694,771,352.22
  5. Step 5: Solve for x
    x = 15,694,771,352.22/122,932.20
  6. Step 6: Final answer
    x = 127,670.14

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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.