Home / 118,105,139.80-177,157,709.70-87,494,138.20

Finding the Fourth Proportional to 118,105,139.80, 177,157,709.70 and 87,494,138.20

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Solution

The fourth proportional to 118,105,139.80, 177,157,709.70 and 87,494,138.20 is: 131,241,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,105,139.80 : 177,157,709.70 = 87,494,138.20 : x
  2. Step 2: Convert to fraction form
    118,105,139.80/177,157,709.70 = 87,494,138.20/x
  3. Step 3: Cross multiply
    118,105,139.80x = 177,157,709.70 × 87,494,138.20
  4. Step 4: Simplify right side
    118,105,139.80x = 15,500,261,135,687,280
  5. Step 5: Solve for x
    x = 15,500,261,135,687,280/118,105,139.80
  6. Step 6: Final answer
    x = 131,241,207.30

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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.