Home / 192,858.03-289,031.90-139,728.51

Finding the Fourth Proportional to 192,858.03, 289,031.90 and 139,728.51

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Solution

The fourth proportional to 192,858.03, 289,031.90 and 139,728.51 is: 209,407.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,858.03 : 289,031.90 = 139,728.51 : x
  2. Step 2: Convert to fraction form
    192,858.03/289,031.90 = 139,728.51/x
  3. Step 3: Cross multiply
    192,858.03x = 289,031.90 × 139,728.51
  4. Step 4: Simplify right side
    192,858.03x = 40,385,996,030.83
  5. Step 5: Solve for x
    x = 40,385,996,030.83/192,858.03
  6. Step 6: Final answer
    x = 209,407.91

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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.