Home / 133,059,428.10-199,589,142.15-81,999,101.70

Finding the Fourth Proportional to 133,059,428.10, 199,589,142.15 and 81,999,101.70

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Solution

The fourth proportional to 133,059,428.10, 199,589,142.15 and 81,999,101.70 is: 122,998,652.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,059,428.10 : 199,589,142.15 = 81,999,101.70 : x
  2. Step 2: Convert to fraction form
    133,059,428.10/199,589,142.15 = 81,999,101.70/x
  3. Step 3: Cross multiply
    133,059,428.10x = 199,589,142.15 × 81,999,101.70
  4. Step 4: Simplify right side
    133,059,428.10x = 16,366,130,365,373,608
  5. Step 5: Solve for x
    x = 16,366,130,365,373,608/133,059,428.10
  6. Step 6: Final answer
    x = 122,998,652.55

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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.