Home / 121,898.21-168,184.51-70,205.73

Finding the Fourth Proportional to 121,898.21, 168,184.51 and 70,205.73

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Solution

The fourth proportional to 121,898.21, 168,184.51 and 70,205.73 is: 96,863.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,898.21 : 168,184.51 = 70,205.73 : x
  2. Step 2: Convert to fraction form
    121,898.21/168,184.51 = 70,205.73/x
  3. Step 3: Cross multiply
    121,898.21x = 168,184.51 × 70,205.73
  4. Step 4: Simplify right side
    121,898.21x = 11,807,515,493.04
  5. Step 5: Solve for x
    x = 11,807,515,493.04/121,898.21
  6. Step 6: Final answer
    x = 96,863.74

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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.