Home / 136,879.40-205,319.09-51,506.30

Finding the Fourth Proportional to 136,879.40, 205,319.09 and 51,506.30

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Solution

The fourth proportional to 136,879.40, 205,319.09 and 51,506.30 is: 77,259.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,879.40 : 205,319.09 = 51,506.30 : x
  2. Step 2: Convert to fraction form
    136,879.40/205,319.09 = 51,506.30/x
  3. Step 3: Cross multiply
    136,879.40x = 205,319.09 × 51,506.30
  4. Step 4: Simplify right side
    136,879.40x = 10,575,225,361.14
  5. Step 5: Solve for x
    x = 10,575,225,361.14/136,879.40
  6. Step 6: Final answer
    x = 77,259.44

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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.