Home / 98,131.72-147,161.10-38,949.64

Finding the Fourth Proportional to 98,131.72, 147,161.10 and 38,949.64

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Solution

The fourth proportional to 98,131.72, 147,161.10 and 38,949.64 is: 58,409.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,131.72 : 147,161.10 = 38,949.64 : x
  2. Step 2: Convert to fraction form
    98,131.72/147,161.10 = 38,949.64/x
  3. Step 3: Cross multiply
    98,131.72x = 147,161.10 × 38,949.64
  4. Step 4: Simplify right side
    98,131.72x = 5,731,871,867.00
  5. Step 5: Solve for x
    x = 5,731,871,867.00/98,131.72
  6. Step 6: Final answer
    x = 58,409.98

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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.