Home / 139,037.55-208,556.28-120,261.75

Finding the Fourth Proportional to 139,037.55, 208,556.28 and 120,261.75

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Solution

The fourth proportional to 139,037.55, 208,556.28 and 120,261.75 is: 180,392.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,037.55 : 208,556.28 = 120,261.75 : x
  2. Step 2: Convert to fraction form
    139,037.55/208,556.28 = 120,261.75/x
  3. Step 3: Cross multiply
    139,037.55x = 208,556.28 × 120,261.75
  4. Step 4: Simplify right side
    139,037.55x = 25,081,343,206.29
  5. Step 5: Solve for x
    x = 25,081,343,206.29/139,037.55
  6. Step 6: Final answer
    x = 180,392.59

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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.