Home / 129,614,609.28-178,783,880.40-83,131,236.48

Finding the Fourth Proportional to 129,614,609.28, 178,783,880.40 and 83,131,236.48

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Solution

The fourth proportional to 129,614,609.28, 178,783,880.40 and 83,131,236.48 is: 114,667,051.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,614,609.28 : 178,783,880.40 = 83,131,236.48 : x
  2. Step 2: Convert to fraction form
    129,614,609.28/178,783,880.40 = 83,131,236.48/x
  3. Step 3: Cross multiply
    129,614,609.28x = 178,783,880.40 × 83,131,236.48
  4. Step 4: Simplify right side
    129,614,609.28x = 14,862,525,040,344,438
  5. Step 5: Solve for x
    x = 14,862,525,040,344,438/129,614,609.28
  6. Step 6: Final answer
    x = 114,667,051.21

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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.