Home / 121,455.63-182,139.69-51,340.41

Finding the Fourth Proportional to 121,455.63, 182,139.69 and 51,340.41

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Solution

The fourth proportional to 121,455.63, 182,139.69 and 51,340.41 is: 76,992.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,455.63 : 182,139.69 = 51,340.41 : x
  2. Step 2: Convert to fraction form
    121,455.63/182,139.69 = 51,340.41/x
  3. Step 3: Cross multiply
    121,455.63x = 182,139.69 × 51,340.41
  4. Step 4: Simplify right side
    121,455.63x = 9,351,126,361.87
  5. Step 5: Solve for x
    x = 9,351,126,361.87/121,455.63
  6. Step 6: Final answer
    x = 76,992.12

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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.