Home / 131,051,311.80-196,702,938.90-66,428,086.20

Finding the Fourth Proportional to 131,051,311.80, 196,702,938.90 and 66,428,086.20

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Solution

The fourth proportional to 131,051,311.80, 196,702,938.90 and 66,428,086.20 is: 99,705,982.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,051,311.80 : 196,702,938.90 = 66,428,086.20 : x
  2. Step 2: Convert to fraction form
    131,051,311.80/196,702,938.90 = 66,428,086.20/x
  3. Step 3: Cross multiply
    131,051,311.80x = 196,702,938.90 × 66,428,086.20
  4. Step 4: Simplify right side
    131,051,311.80x = 13,066,599,781,042,534
  5. Step 5: Solve for x
    x = 13,066,599,781,042,534/131,051,311.80
  6. Step 6: Final answer
    x = 99,705,982.35

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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.