Home / 122,833.20-183,812.40-85,216.80

Finding the Fourth Proportional to 122,833.20, 183,812.40 and 85,216.80

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Solution

The fourth proportional to 122,833.20, 183,812.40 and 85,216.80 is: 127,521.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,833.20 : 183,812.40 = 85,216.80 : x
  2. Step 2: Convert to fraction form
    122,833.20/183,812.40 = 85,216.80/x
  3. Step 3: Cross multiply
    122,833.20x = 183,812.40 × 85,216.80
  4. Step 4: Simplify right side
    122,833.20x = 15,663,904,528.32
  5. Step 5: Solve for x
    x = 15,663,904,528.32/122,833.20
  6. Step 6: Final answer
    x = 127,521.75

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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.