Home / 108,860,807.80-163,291,211.70-81,651,028.60

Finding the Fourth Proportional to 108,860,807.80, 163,291,211.70 and 81,651,028.60

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Solution

The fourth proportional to 108,860,807.80, 163,291,211.70 and 81,651,028.60 is: 122,476,542.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,860,807.80 : 163,291,211.70 = 81,651,028.60 : x
  2. Step 2: Convert to fraction form
    108,860,807.80/163,291,211.70 = 81,651,028.60/x
  3. Step 3: Cross multiply
    108,860,807.80x = 163,291,211.70 × 81,651,028.60
  4. Step 4: Simplify right side
    108,860,807.80x = 13,332,895,396,645,352
  5. Step 5: Solve for x
    x = 13,332,895,396,645,352/108,860,807.80
  6. Step 6: Final answer
    x = 122,476,542.90

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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.