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Finding the Fourth Proportional to 139,760.88, 209,676 and 46,276.08

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Solution

The fourth proportional to 139,760.88, 209,676 and 46,276.08 is: 69,425.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,760.88 : 209,676 = 46,276.08 : x
  2. Step 2: Convert to fraction form
    139,760.88/209,676 = 46,276.08/x
  3. Step 3: Cross multiply
    139,760.88x = 209,676 × 46,276.08
  4. Step 4: Simplify right side
    139,760.88x = 9,702,983,350.08
  5. Step 5: Solve for x
    x = 9,702,983,350.08/139,760.88
  6. Step 6: Final answer
    x = 69,425.60

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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.