Home / 81,660,101.60-122,490,152.40-81,093,231.20

Finding the Fourth Proportional to 81,660,101.60, 122,490,152.40 and 81,093,231.20

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Solution

The fourth proportional to 81,660,101.60, 122,490,152.40 and 81,093,231.20 is: 121,639,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,660,101.60 : 122,490,152.40 = 81,093,231.20 : x
  2. Step 2: Convert to fraction form
    81,660,101.60/122,490,152.40 = 81,093,231.20/x
  3. Step 3: Cross multiply
    81,660,101.60x = 122,490,152.40 × 81,093,231.20
  4. Step 4: Simplify right side
    81,660,101.60x = 9,933,122,248,296,436
  5. Step 5: Solve for x
    x = 9,933,122,248,296,436/81,660,101.60
  6. Step 6: Final answer
    x = 121,639,846.80

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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.