Home / 133,059,765.60-199,589,648.40-81,999,439.20

Finding the Fourth Proportional to 133,059,765.60, 199,589,648.40 and 81,999,439.20

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Solution

The fourth proportional to 133,059,765.60, 199,589,648.40 and 81,999,439.20 is: 122,999,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,059,765.60 : 199,589,648.40 = 81,999,439.20 : x
  2. Step 2: Convert to fraction form
    133,059,765.60/199,589,648.40 = 81,999,439.20/x
  3. Step 3: Cross multiply
    133,059,765.60x = 199,589,648.40 × 81,999,439.20
  4. Step 4: Simplify right side
    133,059,765.60x = 16,366,239,238,925,178
  5. Step 5: Solve for x
    x = 16,366,239,238,925,178/133,059,765.60
  6. Step 6: Final answer
    x = 122,999,158.80

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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.