Home / 198,405.12-297,533.40-80,011.92

Finding the Fourth Proportional to 198,405.12, 297,533.40 and 80,011.92

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Solution

The fourth proportional to 198,405.12, 297,533.40 and 80,011.92 is: 119,987.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,405.12 : 297,533.40 = 80,011.92 : x
  2. Step 2: Convert to fraction form
    198,405.12/297,533.40 = 80,011.92/x
  3. Step 3: Cross multiply
    198,405.12x = 297,533.40 × 80,011.92
  4. Step 4: Simplify right side
    198,405.12x = 23,806,218,598.13
  5. Step 5: Solve for x
    x = 23,806,218,598.13/198,405.12
  6. Step 6: Final answer
    x = 119,987.92

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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.