Home / 190,636.38-263,075.76-103,420.20

Finding the Fourth Proportional to 190,636.38, 263,075.76 and 103,420.20

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Solution

The fourth proportional to 190,636.38, 263,075.76 and 103,420.20 is: 142,718.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,636.38 : 263,075.76 = 103,420.20 : x
  2. Step 2: Convert to fraction form
    190,636.38/263,075.76 = 103,420.20/x
  3. Step 3: Cross multiply
    190,636.38x = 263,075.76 × 103,420.20
  4. Step 4: Simplify right side
    190,636.38x = 27,207,347,714.35
  5. Step 5: Solve for x
    x = 27,207,347,714.35/190,636.38
  6. Step 6: Final answer
    x = 142,718.55

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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.