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Finding the Fourth Proportional to 163,518.70, 245,286.15 and 84,786.70

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Solution

The fourth proportional to 163,518.70, 245,286.15 and 84,786.70 is: 127,184.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,518.70 : 245,286.15 = 84,786.70 : x
  2. Step 2: Convert to fraction form
    163,518.70/245,286.15 = 84,786.70/x
  3. Step 3: Cross multiply
    163,518.70x = 245,286.15 × 84,786.70
  4. Step 4: Simplify right side
    163,518.70x = 20,797,003,214.21
  5. Step 5: Solve for x
    x = 20,797,003,214.21/163,518.70
  6. Step 6: Final answer
    x = 127,184.25

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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.