Home / 138,025.50-190,472.45-76,770.37

Finding the Fourth Proportional to 138,025.50, 190,472.45 and 76,770.37

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Solution

The fourth proportional to 138,025.50, 190,472.45 and 76,770.37 is: 105,941.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,025.50 : 190,472.45 = 76,770.37 : x
  2. Step 2: Convert to fraction form
    138,025.50/190,472.45 = 76,770.37/x
  3. Step 3: Cross multiply
    138,025.50x = 190,472.45 × 76,770.37
  4. Step 4: Simplify right side
    138,025.50x = 14,622,640,255.39
  5. Step 5: Solve for x
    x = 14,622,640,255.39/138,025.50
  6. Step 6: Final answer
    x = 105,941.59

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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.