Home / 128,266.95-192,431.57-39,520.46

Finding the Fourth Proportional to 128,266.95, 192,431.57 and 39,520.46

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Solution

The fourth proportional to 128,266.95, 192,431.57 and 39,520.46 is: 59,290.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,266.95 : 192,431.57 = 39,520.46 : x
  2. Step 2: Convert to fraction form
    128,266.95/192,431.57 = 39,520.46/x
  3. Step 3: Cross multiply
    128,266.95x = 192,431.57 × 39,520.46
  4. Step 4: Simplify right side
    128,266.95x = 7,604,983,301.57
  5. Step 5: Solve for x
    x = 7,604,983,301.57/128,266.95
  6. Step 6: Final answer
    x = 59,290.28

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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.