Home / 131,008,020.80-196,638,002.40-66,384,795.20

Finding the Fourth Proportional to 131,008,020.80, 196,638,002.40 and 66,384,795.20

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Solution

The fourth proportional to 131,008,020.80, 196,638,002.40 and 66,384,795.20 is: 99,641,025.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,008,020.80 : 196,638,002.40 = 66,384,795.20 : x
  2. Step 2: Convert to fraction form
    131,008,020.80/196,638,002.40 = 66,384,795.20/x
  3. Step 3: Cross multiply
    131,008,020.80x = 196,638,002.40 × 66,384,795.20
  4. Step 4: Simplify right side
    131,008,020.80x = 13,053,773,517,861,110
  5. Step 5: Solve for x
    x = 13,053,773,517,861,110/131,008,020.80
  6. Step 6: Final answer
    x = 99,641,025.32

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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.