Home / 140,400.50-193,749.83-76,738.75

Finding the Fourth Proportional to 140,400.50, 193,749.83 and 76,738.75

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Solution

The fourth proportional to 140,400.50, 193,749.83 and 76,738.75 is: 105,897.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,400.50 : 193,749.83 = 76,738.75 : x
  2. Step 2: Convert to fraction form
    140,400.50/193,749.83 = 76,738.75/x
  3. Step 3: Cross multiply
    140,400.50x = 193,749.83 × 76,738.75
  4. Step 4: Simplify right side
    140,400.50x = 14,868,118,898.84
  5. Step 5: Solve for x
    x = 14,868,118,898.84/140,400.50
  6. Step 6: Final answer
    x = 105,897.91

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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.