Home / 196,165.61-270,638.85-128,221.75

Finding the Fourth Proportional to 196,165.61, 270,638.85 and 128,221.75

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Solution

The fourth proportional to 196,165.61, 270,638.85 and 128,221.75 is: 176,900.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,165.61 : 270,638.85 = 128,221.75 : x
  2. Step 2: Convert to fraction form
    196,165.61/270,638.85 = 128,221.75/x
  3. Step 3: Cross multiply
    196,165.61x = 270,638.85 × 128,221.75
  4. Step 4: Simplify right side
    196,165.61x = 34,701,787,784.12
  5. Step 5: Solve for x
    x = 34,701,787,784.12/196,165.61
  6. Step 6: Final answer
    x = 176,900.47

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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.