Home / 121,260.30-181,890.45-112,512.30

Finding the Fourth Proportional to 121,260.30, 181,890.45 and 112,512.30

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Solution

The fourth proportional to 121,260.30, 181,890.45 and 112,512.30 is: 168,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,260.30 : 181,890.45 = 112,512.30 : x
  2. Step 2: Convert to fraction form
    121,260.30/181,890.45 = 112,512.30/x
  3. Step 3: Cross multiply
    121,260.30x = 181,890.45 × 112,512.30
  4. Step 4: Simplify right side
    121,260.30x = 20,464,912,877.54
  5. Step 5: Solve for x
    x = 20,464,912,877.54/121,260.30
  6. Step 6: Final answer
    x = 168,768.45

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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.