Home / 105,198,340.20-145,079,709.30-66,043,764.78

Finding the Fourth Proportional to 105,198,340.20, 145,079,709.30 and 66,043,764.78

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Solution

The fourth proportional to 105,198,340.20, 145,079,709.30 and 66,043,764.78 is: 91,081,381.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,198,340.20 : 145,079,709.30 = 66,043,764.78 : x
  2. Step 2: Convert to fraction form
    105,198,340.20/145,079,709.30 = 66,043,764.78/x
  3. Step 3: Cross multiply
    105,198,340.20x = 145,079,709.30 × 66,043,764.78
  4. Step 4: Simplify right side
    105,198,340.20x = 9,581,610,195,359,980
  5. Step 5: Solve for x
    x = 9,581,610,195,359,980/105,198,340.20
  6. Step 6: Final answer
    x = 91,081,381.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.