Home / 210,999.78-291,196.76-126,133.25

Finding the Fourth Proportional to 210,999.78, 291,196.76 and 126,133.25

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Solution

The fourth proportional to 210,999.78, 291,196.76 and 126,133.25 is: 174,074.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,999.78 : 291,196.76 = 126,133.25 : x
  2. Step 2: Convert to fraction form
    210,999.78/291,196.76 = 126,133.25/x
  3. Step 3: Cross multiply
    210,999.78x = 291,196.76 × 126,133.25
  4. Step 4: Simplify right side
    210,999.78x = 36,729,591,641.62
  5. Step 5: Solve for x
    x = 36,729,591,641.62/210,999.78
  6. Step 6: Final answer
    x = 174,074.08

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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.