Home / 99,652,067.70-149,478,101.55-90,086,129.70

Finding the Fourth Proportional to 99,652,067.70, 149,478,101.55 and 90,086,129.70

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Solution

The fourth proportional to 99,652,067.70, 149,478,101.55 and 90,086,129.70 is: 135,129,194.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,652,067.70 : 149,478,101.55 = 90,086,129.70 : x
  2. Step 2: Convert to fraction form
    99,652,067.70/149,478,101.55 = 90,086,129.70/x
  3. Step 3: Cross multiply
    99,652,067.70x = 149,478,101.55 × 90,086,129.70
  4. Step 4: Simplify right side
    99,652,067.70x = 13,465,903,643,543,072
  5. Step 5: Solve for x
    x = 13,465,903,643,543,072/99,652,067.70
  6. Step 6: Final answer
    x = 135,129,194.55

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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.