Home / 197,140.09-271,958.48-129,127.63

Finding the Fourth Proportional to 197,140.09, 271,958.48 and 129,127.63

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Solution

The fourth proportional to 197,140.09, 271,958.48 and 129,127.63 is: 178,134.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,140.09 : 271,958.48 = 129,127.63 : x
  2. Step 2: Convert to fraction form
    197,140.09/271,958.48 = 129,127.63/x
  3. Step 3: Cross multiply
    197,140.09x = 271,958.48 × 129,127.63
  4. Step 4: Simplify right side
    197,140.09x = 35,117,353,980.80
  5. Step 5: Solve for x
    x = 35,117,353,980.80/197,140.09
  6. Step 6: Final answer
    x = 178,134.01

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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.