Home / 105,278.44-157,890.30-30,381.88

Finding the Fourth Proportional to 105,278.44, 157,890.30 and 30,381.88

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Solution

The fourth proportional to 105,278.44, 157,890.30 and 30,381.88 is: 45,564.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,278.44 : 157,890.30 = 30,381.88 : x
  2. Step 2: Convert to fraction form
    105,278.44/157,890.30 = 30,381.88/x
  3. Step 3: Cross multiply
    105,278.44x = 157,890.30 × 30,381.88
  4. Step 4: Simplify right side
    105,278.44x = 4,797,004,147.76
  5. Step 5: Solve for x
    x = 4,797,004,147.76/105,278.44
  6. Step 6: Final answer
    x = 45,564.92

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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.