Home / 121,393,915.20-182,090,872.80-108,639,331.20

Finding the Fourth Proportional to 121,393,915.20, 182,090,872.80 and 108,639,331.20

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Solution

The fourth proportional to 121,393,915.20, 182,090,872.80 and 108,639,331.20 is: 162,958,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,393,915.20 : 182,090,872.80 = 108,639,331.20 : x
  2. Step 2: Convert to fraction form
    121,393,915.20/182,090,872.80 = 108,639,331.20/x
  3. Step 3: Cross multiply
    121,393,915.20x = 182,090,872.80 × 108,639,331.20
  4. Step 4: Simplify right side
    121,393,915.20x = 19,782,230,638,616,272
  5. Step 5: Solve for x
    x = 19,782,230,638,616,272/121,393,915.20
  6. Step 6: Final answer
    x = 162,958,996.80

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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.