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Finding the Fourth Proportional to 192,655.40, 288,983.10 and 67,980.20

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Solution

The fourth proportional to 192,655.40, 288,983.10 and 67,980.20 is: 101,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,655.40 : 288,983.10 = 67,980.20 : x
  2. Step 2: Convert to fraction form
    192,655.40/288,983.10 = 67,980.20/x
  3. Step 3: Cross multiply
    192,655.40x = 288,983.10 × 67,980.20
  4. Step 4: Simplify right side
    192,655.40x = 19,645,128,934.62
  5. Step 5: Solve for x
    x = 19,645,128,934.62/192,655.40
  6. Step 6: Final answer
    x = 101,970.30

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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.