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Finding the Fourth Proportional to 128,323.80, 192,485.70 and 34,829.55

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Solution

The fourth proportional to 128,323.80, 192,485.70 and 34,829.55 is: 52,244.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,323.80 : 192,485.70 = 34,829.55 : x
  2. Step 2: Convert to fraction form
    128,323.80/192,485.70 = 34,829.55/x
  3. Step 3: Cross multiply
    128,323.80x = 192,485.70 × 34,829.55
  4. Step 4: Simplify right side
    128,323.80x = 6,704,190,312.44
  5. Step 5: Solve for x
    x = 6,704,190,312.44/128,323.80
  6. Step 6: Final answer
    x = 52,244.33

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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.