Home / 121,215.39-181,851.71-38,109.39

Finding the Fourth Proportional to 121,215.39, 181,851.71 and 38,109.39

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Solution

The fourth proportional to 121,215.39, 181,851.71 and 38,109.39 is: 57,173.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,215.39 : 181,851.71 = 38,109.39 : x
  2. Step 2: Convert to fraction form
    121,215.39/181,851.71 = 38,109.39/x
  3. Step 3: Cross multiply
    121,215.39x = 181,851.71 × 38,109.39
  4. Step 4: Simplify right side
    121,215.39x = 6,930,257,548.01
  5. Step 5: Solve for x
    x = 6,930,257,548.01/121,215.39
  6. Step 6: Final answer
    x = 57,173.08

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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.