Home / 139,716.90-192,442.05-107,389.71

Finding the Fourth Proportional to 139,716.90, 192,442.05 and 107,389.71

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Solution

The fourth proportional to 139,716.90, 192,442.05 and 107,389.71 is: 147,915.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,716.90 : 192,442.05 = 107,389.71 : x
  2. Step 2: Convert to fraction form
    139,716.90/192,442.05 = 107,389.71/x
  3. Step 3: Cross multiply
    139,716.90x = 192,442.05 × 107,389.71
  4. Step 4: Simplify right side
    139,716.90x = 20,666,295,941.31
  5. Step 5: Solve for x
    x = 20,666,295,941.31/139,716.90
  6. Step 6: Final answer
    x = 147,915.51

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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.