Home / 126,512,813.20-189,769,219.80-75,452,486.80

Finding the Fourth Proportional to 126,512,813.20, 189,769,219.80 and 75,452,486.80

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Solution

The fourth proportional to 126,512,813.20, 189,769,219.80 and 75,452,486.80 is: 113,178,730.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,512,813.20 : 189,769,219.80 = 75,452,486.80 : x
  2. Step 2: Convert to fraction form
    126,512,813.20/189,769,219.80 = 75,452,486.80/x
  3. Step 3: Cross multiply
    126,512,813.20x = 189,769,219.80 × 75,452,486.80
  4. Step 4: Simplify right side
    126,512,813.20x = 14,318,559,552,005,798
  5. Step 5: Solve for x
    x = 14,318,559,552,005,798/126,512,813.20
  6. Step 6: Final answer
    x = 113,178,730.20

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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.