Home / 121,454.63-182,138.19-51,339.41

Finding the Fourth Proportional to 121,454.63, 182,138.19 and 51,339.41

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Solution

The fourth proportional to 121,454.63, 182,138.19 and 51,339.41 is: 76,990.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,454.63 : 182,138.19 = 51,339.41 : x
  2. Step 2: Convert to fraction form
    121,454.63/182,138.19 = 51,339.41/x
  3. Step 3: Cross multiply
    121,454.63x = 182,138.19 × 51,339.41
  4. Step 4: Simplify right side
    121,454.63x = 9,350,866,302.38
  5. Step 5: Solve for x
    x = 9,350,866,302.38/121,454.63
  6. Step 6: Final answer
    x = 76,990.62

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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.