Home / 129,228,913.56-178,337,038.84-70,491,839.88

Finding the Fourth Proportional to 129,228,913.56, 178,337,038.84 and 70,491,839.88

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Solution

The fourth proportional to 129,228,913.56, 178,337,038.84 and 70,491,839.88 is: 97,279,359.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,228,913.56 : 178,337,038.84 = 70,491,839.88 : x
  2. Step 2: Convert to fraction form
    129,228,913.56/178,337,038.84 = 70,491,839.88/x
  3. Step 3: Cross multiply
    129,228,913.56x = 178,337,038.84 × 70,491,839.88
  4. Step 4: Simplify right side
    129,228,913.56x = 12,571,305,986,582,620
  5. Step 5: Solve for x
    x = 12,571,305,986,582,620/129,228,913.56
  6. Step 6: Final answer
    x = 97,279,359.86

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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.