Home / 103,709.03-143,042.09-71,454.42

Finding the Fourth Proportional to 103,709.03, 143,042.09 and 71,454.42

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Solution

The fourth proportional to 103,709.03, 143,042.09 and 71,454.42 is: 98,554.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,709.03 : 143,042.09 = 71,454.42 : x
  2. Step 2: Convert to fraction form
    103,709.03/143,042.09 = 71,454.42/x
  3. Step 3: Cross multiply
    103,709.03x = 143,042.09 × 71,454.42
  4. Step 4: Simplify right side
    103,709.03x = 10,220,989,219.27
  5. Step 5: Solve for x
    x = 10,220,989,219.27/103,709.03
  6. Step 6: Final answer
    x = 98,554.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.