Home / 197,379.74-272,211.90-139,905.38

Finding the Fourth Proportional to 197,379.74, 272,211.90 and 139,905.38

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Solution

The fourth proportional to 197,379.74, 272,211.90 and 139,905.38 is: 192,947.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,379.74 : 272,211.90 = 139,905.38 : x
  2. Step 2: Convert to fraction form
    197,379.74/272,211.90 = 139,905.38/x
  3. Step 3: Cross multiply
    197,379.74x = 272,211.90 × 139,905.38
  4. Step 4: Simplify right side
    197,379.74x = 38,083,909,310.02
  5. Step 5: Solve for x
    x = 38,083,909,310.02/197,379.74
  6. Step 6: Final answer
    x = 192,947.41

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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.