Home / 128,321-192,478.26-34,824.32

Finding the Fourth Proportional to 128,321, 192,478.26 and 34,824.32

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Solution

The fourth proportional to 128,321, 192,478.26 and 34,824.32 is: 52,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,321 : 192,478.26 = 34,824.32 : x
  2. Step 2: Convert to fraction form
    128,321/192,478.26 = 34,824.32/x
  3. Step 3: Cross multiply
    128,321x = 192,478.26 × 34,824.32
  4. Step 4: Simplify right side
    128,321x = 6,702,924,519.28
  5. Step 5: Solve for x
    x = 6,702,924,519.28/128,321
  6. Step 6: Final answer
    x = 52,235.60

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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.