Home / 196,440.84-271,017.28-128,496.60

Finding the Fourth Proportional to 196,440.84, 271,017.28 and 128,496.60

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Solution

The fourth proportional to 196,440.84, 271,017.28 and 128,496.60 is: 177,278.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,440.84 : 271,017.28 = 128,496.60 : x
  2. Step 2: Convert to fraction form
    196,440.84/271,017.28 = 128,496.60/x
  3. Step 3: Cross multiply
    196,440.84x = 271,017.28 × 128,496.60
  4. Step 4: Simplify right side
    196,440.84x = 34,824,799,021.25
  5. Step 5: Solve for x
    x = 34,824,799,021.25/196,440.84
  6. Step 6: Final answer
    x = 177,278.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.