Home / 193,320.40-289,980.60-68,645.20

Finding the Fourth Proportional to 193,320.40, 289,980.60 and 68,645.20

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Solution

The fourth proportional to 193,320.40, 289,980.60 and 68,645.20 is: 102,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,320.40 : 289,980.60 = 68,645.20 : x
  2. Step 2: Convert to fraction form
    193,320.40/289,980.60 = 68,645.20/x
  3. Step 3: Cross multiply
    193,320.40x = 289,980.60 × 68,645.20
  4. Step 4: Simplify right side
    193,320.40x = 19,905,776,283.12
  5. Step 5: Solve for x
    x = 19,905,776,283.12/193,320.40
  6. Step 6: Final answer
    x = 102,967.80

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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.