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Finding the Fourth Proportional to 104,225.51, 143,778.38 and 65,920.54

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Solution

The fourth proportional to 104,225.51, 143,778.38 and 65,920.54 is: 90,936.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,225.51 : 143,778.38 = 65,920.54 : x
  2. Step 2: Convert to fraction form
    104,225.51/143,778.38 = 65,920.54/x
  3. Step 3: Cross multiply
    104,225.51x = 143,778.38 × 65,920.54
  4. Step 4: Simplify right side
    104,225.51x = 9,477,948,120.32
  5. Step 5: Solve for x
    x = 9,477,948,120.32/104,225.51
  6. Step 6: Final answer
    x = 90,936.94

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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.