Home / 128,115.09-192,172.64-64,925.37

Finding the Fourth Proportional to 128,115.09, 192,172.64 and 64,925.37

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Solution

The fourth proportional to 128,115.09, 192,172.64 and 64,925.37 is: 97,388.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,115.09 : 192,172.64 = 64,925.37 : x
  2. Step 2: Convert to fraction form
    128,115.09/192,172.64 = 64,925.37/x
  3. Step 3: Cross multiply
    128,115.09x = 192,172.64 × 64,925.37
  4. Step 4: Simplify right side
    128,115.09x = 12,476,879,431.25
  5. Step 5: Solve for x
    x = 12,476,879,431.25/128,115.09
  6. Step 6: Final answer
    x = 97,388.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.