Home / 126,188,875.20-189,283,312.80-80,839,243.20

Finding the Fourth Proportional to 126,188,875.20, 189,283,312.80 and 80,839,243.20

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Solution

The fourth proportional to 126,188,875.20, 189,283,312.80 and 80,839,243.20 is: 121,258,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,188,875.20 : 189,283,312.80 = 80,839,243.20 : x
  2. Step 2: Convert to fraction form
    126,188,875.20/189,283,312.80 = 80,839,243.20/x
  3. Step 3: Cross multiply
    126,188,875.20x = 189,283,312.80 × 80,839,243.20
  4. Step 4: Simplify right side
    126,188,875.20x = 15,301,519,757,140,874
  5. Step 5: Solve for x
    x = 15,301,519,757,140,874/126,188,875.20
  6. Step 6: Final answer
    x = 121,258,864.80

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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.