Home / 122,812.20-183,780.90-85,195.80

Finding the Fourth Proportional to 122,812.20, 183,780.90 and 85,195.80

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Solution

The fourth proportional to 122,812.20, 183,780.90 and 85,195.80 is: 127,490.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,812.20 : 183,780.90 = 85,195.80 : x
  2. Step 2: Convert to fraction form
    122,812.20/183,780.90 = 85,195.80/x
  3. Step 3: Cross multiply
    122,812.20x = 183,780.90 × 85,195.80
  4. Step 4: Simplify right side
    122,812.20x = 15,657,360,800.22
  5. Step 5: Solve for x
    x = 15,657,360,800.22/122,812.20
  6. Step 6: Final answer
    x = 127,490.27

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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.