Home / 130,646,919.94-180,200,958.49-85,978,660.34

Finding the Fourth Proportional to 130,646,919.94, 180,200,958.49 and 85,978,660.34

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Solution

The fourth proportional to 130,646,919.94, 180,200,958.49 and 85,978,660.34 is: 118,590,143.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,646,919.94 : 180,200,958.49 = 85,978,660.34 : x
  2. Step 2: Convert to fraction form
    130,646,919.94/180,200,958.49 = 85,978,660.34/x
  3. Step 3: Cross multiply
    130,646,919.94x = 180,200,958.49 × 85,978,660.34
  4. Step 4: Simplify right side
    130,646,919.94x = 15,493,437,003,512,126
  5. Step 5: Solve for x
    x = 15,493,437,003,512,126/130,646,919.94
  6. Step 6: Final answer
    x = 118,590,143.66

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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.