Home / 165,871.50-248,782.76-81,609.10

Finding the Fourth Proportional to 165,871.50, 248,782.76 and 81,609.10

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Solution

The fourth proportional to 165,871.50, 248,782.76 and 81,609.10 is: 122,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,871.50 : 248,782.76 = 81,609.10 : x
  2. Step 2: Convert to fraction form
    165,871.50/248,782.76 = 81,609.10/x
  3. Step 3: Cross multiply
    165,871.50x = 248,782.76 × 81,609.10
  4. Step 4: Simplify right side
    165,871.50x = 20,302,937,139.12
  5. Step 5: Solve for x
    x = 20,302,937,139.12/165,871.50
  6. Step 6: Final answer
    x = 122,401.60

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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.