Home / 122,665,845.60-183,998,768.40-81,851,176.80

Finding the Fourth Proportional to 122,665,845.60, 183,998,768.40 and 81,851,176.80

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Solution

The fourth proportional to 122,665,845.60, 183,998,768.40 and 81,851,176.80 is: 122,776,765.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,665,845.60 : 183,998,768.40 = 81,851,176.80 : x
  2. Step 2: Convert to fraction form
    122,665,845.60/183,998,768.40 = 81,851,176.80/x
  3. Step 3: Cross multiply
    122,665,845.60x = 183,998,768.40 × 81,851,176.80
  4. Step 4: Simplify right side
    122,665,845.60x = 15,060,515,723,290,654
  5. Step 5: Solve for x
    x = 15,060,515,723,290,654/122,665,845.60
  6. Step 6: Final answer
    x = 122,776,765.20

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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.