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Finding the Fourth Proportional to 248,055.40, 372,131.70 and 105,900.40

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Solution

The fourth proportional to 248,055.40, 372,131.70 and 105,900.40 is: 158,871.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,055.40 : 372,131.70 = 105,900.40 : x
  2. Step 2: Convert to fraction form
    248,055.40/372,131.70 = 105,900.40/x
  3. Step 3: Cross multiply
    248,055.40x = 372,131.70 × 105,900.40
  4. Step 4: Simplify right side
    248,055.40x = 39,408,895,882.68
  5. Step 5: Solve for x
    x = 39,408,895,882.68/248,055.40
  6. Step 6: Final answer
    x = 158,871.35

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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.