Home / 122,772.60-183,986.10-90,934.20

Finding the Fourth Proportional to 122,772.60, 183,986.10 and 90,934.20

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Solution

The fourth proportional to 122,772.60, 183,986.10 and 90,934.20 is: 136,273.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,772.60 : 183,986.10 = 90,934.20 : x
  2. Step 2: Convert to fraction form
    122,772.60/183,986.10 = 90,934.20/x
  3. Step 3: Cross multiply
    122,772.60x = 183,986.10 × 90,934.20
  4. Step 4: Simplify right side
    122,772.60x = 16,730,628,814.62
  5. Step 5: Solve for x
    x = 16,730,628,814.62/122,772.60
  6. Step 6: Final answer
    x = 136,273.31

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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.