Home / 138,672,615.60-208,008,923.40-67,008,999.60

Finding the Fourth Proportional to 138,672,615.60, 208,008,923.40 and 67,008,999.60

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Solution

The fourth proportional to 138,672,615.60, 208,008,923.40 and 67,008,999.60 is: 100,513,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,672,615.60 : 208,008,923.40 = 67,008,999.60 : x
  2. Step 2: Convert to fraction form
    138,672,615.60/208,008,923.40 = 67,008,999.60/x
  3. Step 3: Cross multiply
    138,672,615.60x = 208,008,923.40 × 67,008,999.60
  4. Step 4: Simplify right side
    138,672,615.60x = 13,938,469,864,907,032
  5. Step 5: Solve for x
    x = 13,938,469,864,907,032/138,672,615.60
  6. Step 6: Final answer
    x = 100,513,499.40

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Similar ratio
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1.5x scale

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.