Home / 127,138.32-190,590.48-43,974

Finding the Fourth Proportional to 127,138.32, 190,590.48 and 43,974

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Solution

The fourth proportional to 127,138.32, 190,590.48 and 43,974 is: 65,920.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,138.32 : 190,590.48 = 43,974 : x
  2. Step 2: Convert to fraction form
    127,138.32/190,590.48 = 43,974/x
  3. Step 3: Cross multiply
    127,138.32x = 190,590.48 × 43,974
  4. Step 4: Simplify right side
    127,138.32x = 8,381,025,767.52
  5. Step 5: Solve for x
    x = 8,381,025,767.52/127,138.32
  6. Step 6: Final answer
    x = 65,920.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.