Home / 139,795.26-192,925.53-105,278.19

Finding the Fourth Proportional to 139,795.26, 192,925.53 and 105,278.19

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Solution

The fourth proportional to 139,795.26, 192,925.53 and 105,278.19 is: 145,289.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,795.26 : 192,925.53 = 105,278.19 : x
  2. Step 2: Convert to fraction form
    139,795.26/192,925.53 = 105,278.19/x
  3. Step 3: Cross multiply
    139,795.26x = 192,925.53 × 105,278.19
  4. Step 4: Simplify right side
    139,795.26x = 20,310,850,603.19
  5. Step 5: Solve for x
    x = 20,310,850,603.19/139,795.26
  6. Step 6: Final answer
    x = 145,289.98

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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.