Home / 115,920,134.40-173,880,201.60-81,907,910.40

Finding the Fourth Proportional to 115,920,134.40, 173,880,201.60 and 81,907,910.40

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Solution

The fourth proportional to 115,920,134.40, 173,880,201.60 and 81,907,910.40 is: 122,861,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,920,134.40 : 173,880,201.60 = 81,907,910.40 : x
  2. Step 2: Convert to fraction form
    115,920,134.40/173,880,201.60 = 81,907,910.40/x
  3. Step 3: Cross multiply
    115,920,134.40x = 173,880,201.60 × 81,907,910.40
  4. Step 4: Simplify right side
    115,920,134.40x = 14,242,163,972,986,738
  5. Step 5: Solve for x
    x = 14,242,163,972,986,738/115,920,134.40
  6. Step 6: Final answer
    x = 122,861,865.60

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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.