Home / 140,357.12-193,705.98-76,704.40

Finding the Fourth Proportional to 140,357.12, 193,705.98 and 76,704.40

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Solution

The fourth proportional to 140,357.12, 193,705.98 and 76,704.40 is: 105,859.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,357.12 : 193,705.98 = 76,704.40 : x
  2. Step 2: Convert to fraction form
    140,357.12/193,705.98 = 76,704.40/x
  3. Step 3: Cross multiply
    140,357.12x = 193,705.98 × 76,704.40
  4. Step 4: Simplify right side
    140,357.12x = 14,858,100,972.31
  5. Step 5: Solve for x
    x = 14,858,100,972.31/140,357.12
  6. Step 6: Final answer
    x = 105,859.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.