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Finding the Fourth Proportional to 149,289.80, 206,062.26 and 98,339.72

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Solution

The fourth proportional to 149,289.80, 206,062.26 and 98,339.72 is: 135,736.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,289.80 : 206,062.26 = 98,339.72 : x
  2. Step 2: Convert to fraction form
    149,289.80/206,062.26 = 98,339.72/x
  3. Step 3: Cross multiply
    149,289.80x = 206,062.26 × 98,339.72
  4. Step 4: Simplify right side
    149,289.80x = 20,264,104,950.97
  5. Step 5: Solve for x
    x = 20,264,104,950.97/149,289.80
  6. Step 6: Final answer
    x = 135,736.70

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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.