Home / 128,265,232.78-192,397,914.78-31,220,956.90

Finding the Fourth Proportional to 128,265,232.78, 192,397,914.78 and 31,220,956.90

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Solution

The fourth proportional to 128,265,232.78, 192,397,914.78 and 31,220,956.90 is: 46,831,451.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,265,232.78 : 192,397,914.78 = 31,220,956.90 : x
  2. Step 2: Convert to fraction form
    128,265,232.78/192,397,914.78 = 31,220,956.90/x
  3. Step 3: Cross multiply
    128,265,232.78x = 192,397,914.78 × 31,220,956.90
  4. Step 4: Simplify right side
    128,265,232.78x = 6,006,847,004,996,253
  5. Step 5: Solve for x
    x = 6,006,847,004,996,253/128,265,232.78
  6. Step 6: Final answer
    x = 46,831,451.32

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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.