Home / 81,468,741.40-122,203,112.10-70,946,209.60

Finding the Fourth Proportional to 81,468,741.40, 122,203,112.10 and 70,946,209.60

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Solution

The fourth proportional to 81,468,741.40, 122,203,112.10 and 70,946,209.60 is: 106,419,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,468,741.40 : 122,203,112.10 = 70,946,209.60 : x
  2. Step 2: Convert to fraction form
    81,468,741.40/122,203,112.10 = 70,946,209.60/x
  3. Step 3: Cross multiply
    81,468,741.40x = 122,203,112.10 × 70,946,209.60
  4. Step 4: Simplify right side
    81,468,741.40x = 8,669,847,604,818,895
  5. Step 5: Solve for x
    x = 8,669,847,604,818,895/81,468,741.40
  6. Step 6: Final answer
    x = 106,419,314.40

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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.