Home / 165,729.65-248,430.45-81,420.80

Finding the Fourth Proportional to 165,729.65, 248,430.45 and 81,420.80

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Solution

The fourth proportional to 165,729.65, 248,430.45 and 81,420.80 is: 122,050.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,729.65 : 248,430.45 = 81,420.80 : x
  2. Step 2: Convert to fraction form
    165,729.65/248,430.45 = 81,420.80/x
  3. Step 3: Cross multiply
    165,729.65x = 248,430.45 × 81,420.80
  4. Step 4: Simplify right side
    165,729.65x = 20,227,405,983.36
  5. Step 5: Solve for x
    x = 20,227,405,983.36/165,729.65
  6. Step 6: Final answer
    x = 122,050.62

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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.