Home / 81,468,746.40-122,203,119.60-70,946,214.60

Finding the Fourth Proportional to 81,468,746.40, 122,203,119.60 and 70,946,214.60

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Solution

The fourth proportional to 81,468,746.40, 122,203,119.60 and 70,946,214.60 is: 106,419,321.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,468,746.40 : 122,203,119.60 = 70,946,214.60 : x
  2. Step 2: Convert to fraction form
    81,468,746.40/122,203,119.60 = 70,946,214.60/x
  3. Step 3: Cross multiply
    81,468,746.40x = 122,203,119.60 × 70,946,214.60
  4. Step 4: Simplify right side
    81,468,746.40x = 8,669,848,747,931,065
  5. Step 5: Solve for x
    x = 8,669,848,747,931,065/81,468,746.40
  6. Step 6: Final answer
    x = 106,419,321.90

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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.