Home / 190,409.80-285,341.10-107,127.88

Finding the Fourth Proportional to 190,409.80, 285,341.10 and 107,127.88

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Solution

The fourth proportional to 190,409.80, 285,341.10 and 107,127.88 is: 160,537.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,409.80 : 285,341.10 = 107,127.88 : x
  2. Step 2: Convert to fraction form
    190,409.80/285,341.10 = 107,127.88/x
  3. Step 3: Cross multiply
    190,409.80x = 285,341.10 × 107,127.88
  4. Step 4: Simplify right side
    190,409.80x = 30,567,987,119.87
  5. Step 5: Solve for x
    x = 30,567,987,119.87/190,409.80
  6. Step 6: Final answer
    x = 160,537.89

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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.