Home / 139,647,416.88-192,713,421.75-80,944,132.78

Finding the Fourth Proportional to 139,647,416.88, 192,713,421.75 and 80,944,132.78

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Solution

The fourth proportional to 139,647,416.88, 192,713,421.75 and 80,944,132.78 is: 111,702,895.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,647,416.88 : 192,713,421.75 = 80,944,132.78 : x
  2. Step 2: Convert to fraction form
    139,647,416.88/192,713,421.75 = 80,944,132.78/x
  3. Step 3: Cross multiply
    139,647,416.88x = 192,713,421.75 × 80,944,132.78
  4. Step 4: Simplify right side
    139,647,416.88x = 15,599,020,798,557,492
  5. Step 5: Solve for x
    x = 15,599,020,798,557,492/139,647,416.88
  6. Step 6: Final answer
    x = 111,702,895.38

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1.5x scale

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.