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Finding the Fourth Proportional to 169,978,890.80, 254,968,336.20 and 108,756,887.60

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Solution

The fourth proportional to 169,978,890.80, 254,968,336.20 and 108,756,887.60 is: 163,135,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,978,890.80 : 254,968,336.20 = 108,756,887.60 : x
  2. Step 2: Convert to fraction form
    169,978,890.80/254,968,336.20 = 108,756,887.60/x
  3. Step 3: Cross multiply
    169,978,890.80x = 254,968,336.20 × 108,756,887.60
  4. Step 4: Simplify right side
    169,978,890.80x = 27,729,562,681,662,408
  5. Step 5: Solve for x
    x = 27,729,562,681,662,408/169,978,890.80
  6. Step 6: Final answer
    x = 163,135,331.40

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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.