Home / 192,916.80-288,986.40-129,931.20

Finding the Fourth Proportional to 192,916.80, 288,986.40 and 129,931.20

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Solution

The fourth proportional to 192,916.80, 288,986.40 and 129,931.20 is: 194,634.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,916.80 : 288,986.40 = 129,931.20 : x
  2. Step 2: Convert to fraction form
    192,916.80/288,986.40 = 129,931.20/x
  3. Step 3: Cross multiply
    192,916.80x = 288,986.40 × 129,931.20
  4. Step 4: Simplify right side
    192,916.80x = 37,548,349,735.68
  5. Step 5: Solve for x
    x = 37,548,349,735.68/192,916.80
  6. Step 6: Final answer
    x = 194,634.94

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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.