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Finding the Fourth Proportional to 121,026.60, 181,539.90 and 102,594.60

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Solution

The fourth proportional to 121,026.60, 181,539.90 and 102,594.60 is: 153,891.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,026.60 : 181,539.90 = 102,594.60 : x
  2. Step 2: Convert to fraction form
    121,026.60/181,539.90 = 102,594.60/x
  3. Step 3: Cross multiply
    121,026.60x = 181,539.90 × 102,594.60
  4. Step 4: Simplify right side
    121,026.60x = 18,625,013,424.54
  5. Step 5: Solve for x
    x = 18,625,013,424.54/121,026.60
  6. Step 6: Final answer
    x = 153,891.90

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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.