Home / 198,021.12-297,099.72-57,800.40

Finding the Fourth Proportional to 198,021.12, 297,099.72 and 57,800.40

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Solution

The fourth proportional to 198,021.12, 297,099.72 and 57,800.40 is: 86,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,021.12 : 297,099.72 = 57,800.40 : x
  2. Step 2: Convert to fraction form
    198,021.12/297,099.72 = 57,800.40/x
  3. Step 3: Cross multiply
    198,021.12x = 297,099.72 × 57,800.40
  4. Step 4: Simplify right side
    198,021.12x = 17,172,482,655.89
  5. Step 5: Solve for x
    x = 17,172,482,655.89/198,021.12
  6. Step 6: Final answer
    x = 86,720.46

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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.