Home / 128,431.80-192,647.70-34,937.55

Finding the Fourth Proportional to 128,431.80, 192,647.70 and 34,937.55

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Solution

The fourth proportional to 128,431.80, 192,647.70 and 34,937.55 is: 52,406.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,431.80 : 192,647.70 = 34,937.55 : x
  2. Step 2: Convert to fraction form
    128,431.80/192,647.70 = 34,937.55/x
  3. Step 3: Cross multiply
    128,431.80x = 192,647.70 × 34,937.55
  4. Step 4: Simplify right side
    128,431.80x = 6,730,638,651.14
  5. Step 5: Solve for x
    x = 6,730,638,651.14/128,431.80
  6. Step 6: Final answer
    x = 52,406.33

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Similar ratio
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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.