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Finding the Fourth Proportional to 139,172.26, 192,055.32 and 84,704.74

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Solution

The fourth proportional to 139,172.26, 192,055.32 and 84,704.74 is: 116,891.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,172.26 : 192,055.32 = 84,704.74 : x
  2. Step 2: Convert to fraction form
    139,172.26/192,055.32 = 84,704.74/x
  3. Step 3: Cross multiply
    139,172.26x = 192,055.32 × 84,704.74
  4. Step 4: Simplify right side
    139,172.26x = 16,267,995,946.22
  5. Step 5: Solve for x
    x = 16,267,995,946.22/139,172.26
  6. Step 6: Final answer
    x = 116,891.08

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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.