Home / 99,907.20-137,865.28-55,194.24

Finding the Fourth Proportional to 99,907.20, 137,865.28 and 55,194.24

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Solution

The fourth proportional to 99,907.20, 137,865.28 and 55,194.24 is: 76,164.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,907.20 : 137,865.28 = 55,194.24 : x
  2. Step 2: Convert to fraction form
    99,907.20/137,865.28 = 55,194.24/x
  3. Step 3: Cross multiply
    99,907.20x = 137,865.28 × 55,194.24
  4. Step 4: Simplify right side
    99,907.20x = 7,609,369,351.99
  5. Step 5: Solve for x
    x = 7,609,369,351.99/99,907.20
  6. Step 6: Final answer
    x = 76,164.37

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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.