Home / 209,867.52-314,808.96-85,205.76

Finding the Fourth Proportional to 209,867.52, 314,808.96 and 85,205.76

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Solution

The fourth proportional to 209,867.52, 314,808.96 and 85,205.76 is: 127,811.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,867.52 : 314,808.96 = 85,205.76 : x
  2. Step 2: Convert to fraction form
    209,867.52/314,808.96 = 85,205.76/x
  3. Step 3: Cross multiply
    209,867.52x = 314,808.96 × 85,205.76
  4. Step 4: Simplify right side
    209,867.52x = 26,823,536,691.61
  5. Step 5: Solve for x
    x = 26,823,536,691.61/209,867.52
  6. Step 6: Final answer
    x = 127,811.76

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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.