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Finding the Fourth Proportional to 192,101.40, 288,149.40 and 86,920.20

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Solution

The fourth proportional to 192,101.40, 288,149.40 and 86,920.20 is: 130,379.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,101.40 : 288,149.40 = 86,920.20 : x
  2. Step 2: Convert to fraction form
    192,101.40/288,149.40 = 86,920.20/x
  3. Step 3: Cross multiply
    192,101.40x = 288,149.40 × 86,920.20
  4. Step 4: Simplify right side
    192,101.40x = 25,046,003,477.88
  5. Step 5: Solve for x
    x = 25,046,003,477.88/192,101.40
  6. Step 6: Final answer
    x = 130,379.08

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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.