Home / 151,346,405.60-208,858,037.82-81,731,780.34

Finding the Fourth Proportional to 151,346,405.60, 208,858,037.82 and 81,731,780.34

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Solution

The fourth proportional to 151,346,405.60, 208,858,037.82 and 81,731,780.34 is: 112,789,855.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,346,405.60 : 208,858,037.82 = 81,731,780.34 : x
  2. Step 2: Convert to fraction form
    151,346,405.60/208,858,037.82 = 81,731,780.34/x
  3. Step 3: Cross multiply
    151,346,405.60x = 208,858,037.82 × 81,731,780.34
  4. Step 4: Simplify right side
    151,346,405.60x = 17,070,339,269,347,652
  5. Step 5: Solve for x
    x = 17,070,339,269,347,652/151,346,405.60
  6. Step 6: Final answer
    x = 112,789,855.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.