Home / 100,212.24-138,292.95-54,890.98

Finding the Fourth Proportional to 100,212.24, 138,292.95 and 54,890.98

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Solution

The fourth proportional to 100,212.24, 138,292.95 and 54,890.98 is: 75,749.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,212.24 : 138,292.95 = 54,890.98 : x
  2. Step 2: Convert to fraction form
    100,212.24/138,292.95 = 54,890.98/x
  3. Step 3: Cross multiply
    100,212.24x = 138,292.95 × 54,890.98
  4. Step 4: Simplify right side
    100,212.24x = 7,591,034,586.67
  5. Step 5: Solve for x
    x = 7,591,034,586.67/100,212.24
  6. Step 6: Final answer
    x = 75,749.58

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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.