Home / 128,741,795.84-193,301,667.84-80,425,533.44

Finding the Fourth Proportional to 128,741,795.84, 193,301,667.84 and 80,425,533.44

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Solution

The fourth proportional to 128,741,795.84, 193,301,667.84 and 80,425,533.44 is: 120,756,353.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,741,795.84 : 193,301,667.84 = 80,425,533.44 : x
  2. Step 2: Convert to fraction form
    128,741,795.84/193,301,667.84 = 80,425,533.44/x
  3. Step 3: Cross multiply
    128,741,795.84x = 193,301,667.84 × 80,425,533.44
  4. Step 4: Simplify right side
    128,741,795.84x = 15,546,389,750,873,692
  5. Step 5: Solve for x
    x = 15,546,389,750,873,692/128,741,795.84
  6. Step 6: Final answer
    x = 120,756,353.05

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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.