Home / 81,683,808.60-122,525,712.90-81,205,511.70

Finding the Fourth Proportional to 81,683,808.60, 122,525,712.90 and 81,205,511.70

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Solution

The fourth proportional to 81,683,808.60, 122,525,712.90 and 81,205,511.70 is: 121,808,267.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,683,808.60 : 122,525,712.90 = 81,205,511.70 : x
  2. Step 2: Convert to fraction form
    81,683,808.60/122,525,712.90 = 81,205,511.70/x
  3. Step 3: Cross multiply
    81,683,808.60x = 122,525,712.90 × 81,205,511.70
  4. Step 4: Simplify right side
    81,683,808.60x = 9,949,763,212,451,792
  5. Step 5: Solve for x
    x = 9,949,763,212,451,792/81,683,808.60
  6. Step 6: Final answer
    x = 121,808,267.55

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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.