Home / 129,510,074.16-194,365,851.12-90,394,415.28

Finding the Fourth Proportional to 129,510,074.16, 194,365,851.12 and 90,394,415.28

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Solution

The fourth proportional to 129,510,074.16, 194,365,851.12 and 90,394,415.28 is: 135,661,936.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,510,074.16 : 194,365,851.12 = 90,394,415.28 : x
  2. Step 2: Convert to fraction form
    129,510,074.16/194,365,851.12 = 90,394,415.28/x
  3. Step 3: Cross multiply
    129,510,074.16x = 194,365,851.12 × 90,394,415.28
  4. Step 4: Simplify right side
    129,510,074.16x = 17,569,587,462,391,934
  5. Step 5: Solve for x
    x = 17,569,587,462,391,934/129,510,074.16
  6. Step 6: Final answer
    x = 135,661,936.54

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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.