Home / 198,214.12-297,366.60-85,913.20

Finding the Fourth Proportional to 198,214.12, 297,366.60 and 85,913.20

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Solution

The fourth proportional to 198,214.12, 297,366.60 and 85,913.20 is: 128,889.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,214.12 : 297,366.60 = 85,913.20 : x
  2. Step 2: Convert to fraction form
    198,214.12/297,366.60 = 85,913.20/x
  3. Step 3: Cross multiply
    198,214.12x = 297,366.60 × 85,913.20
  4. Step 4: Simplify right side
    198,214.12x = 25,547,716,179.12
  5. Step 5: Solve for x
    x = 25,547,716,179.12/198,214.12
  6. Step 6: Final answer
    x = 128,889.49

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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.