Home / 198,128.20-297,192.30-73,443.40

Finding the Fourth Proportional to 198,128.20, 297,192.30 and 73,443.40

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Solution

The fourth proportional to 198,128.20, 297,192.30 and 73,443.40 is: 110,165.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,128.20 : 297,192.30 = 73,443.40 : x
  2. Step 2: Convert to fraction form
    198,128.20/297,192.30 = 73,443.40/x
  3. Step 3: Cross multiply
    198,128.20x = 297,192.30 × 73,443.40
  4. Step 4: Simplify right side
    198,128.20x = 21,826,812,965.82
  5. Step 5: Solve for x
    x = 21,826,812,965.82/198,128.20
  6. Step 6: Final answer
    x = 110,165.10

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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.