Home / 128,122,291.88-192,490,032.67-82,154,222.75

Finding the Fourth Proportional to 128,122,291.88, 192,490,032.67 and 82,154,222.75

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Solution

The fourth proportional to 128,122,291.88, 192,490,032.67 and 82,154,222.75 is: 123,427,928.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,122,291.88 : 192,490,032.67 = 82,154,222.75 : x
  2. Step 2: Convert to fraction form
    128,122,291.88/192,490,032.67 = 82,154,222.75/x
  3. Step 3: Cross multiply
    128,122,291.88x = 192,490,032.67 × 82,154,222.75
  4. Step 4: Simplify right side
    128,122,291.88x = 15,813,869,021,401,796
  5. Step 5: Solve for x
    x = 15,813,869,021,401,796/128,122,291.88
  6. Step 6: Final answer
    x = 123,427,928.03

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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.