Home / 107,389.40-148,137.66-99,786.84

Finding the Fourth Proportional to 107,389.40, 148,137.66 and 99,786.84

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Solution

The fourth proportional to 107,389.40, 148,137.66 and 99,786.84 is: 137,650.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,389.40 : 148,137.66 = 99,786.84 : x
  2. Step 2: Convert to fraction form
    107,389.40/148,137.66 = 99,786.84/x
  3. Step 3: Cross multiply
    107,389.40x = 148,137.66 × 99,786.84
  4. Step 4: Simplify right side
    107,389.40x = 14,782,188,420.88
  5. Step 5: Solve for x
    x = 14,782,188,420.88/107,389.40
  6. Step 6: Final answer
    x = 137,650.36

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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.