Home / 139,277.23-192,206.99-78,846.78

Finding the Fourth Proportional to 139,277.23, 192,206.99 and 78,846.78

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Solution

The fourth proportional to 139,277.23, 192,206.99 and 78,846.78 is: 108,811.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,277.23 : 192,206.99 = 78,846.78 : x
  2. Step 2: Convert to fraction form
    139,277.23/192,206.99 = 78,846.78/x
  3. Step 3: Cross multiply
    139,277.23x = 192,206.99 × 78,846.78
  4. Step 4: Simplify right side
    139,277.23x = 15,154,902,254.99
  5. Step 5: Solve for x
    x = 15,154,902,254.99/139,277.23
  6. Step 6: Final answer
    x = 108,811.05

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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.