Home / 209,511.36-314,259.48-91,182.78

Finding the Fourth Proportional to 209,511.36, 314,259.48 and 91,182.78

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Solution

The fourth proportional to 209,511.36, 314,259.48 and 91,182.78 is: 136,770.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,511.36 : 314,259.48 = 91,182.78 : x
  2. Step 2: Convert to fraction form
    209,511.36/314,259.48 = 91,182.78/x
  3. Step 3: Cross multiply
    209,511.36x = 314,259.48 × 91,182.78
  4. Step 4: Simplify right side
    209,511.36x = 28,655,053,027.75
  5. Step 5: Solve for x
    x = 28,655,053,027.75/209,511.36
  6. Step 6: Final answer
    x = 136,770.88

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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.