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Finding the Fourth Proportional to 121,978.70, 183,405.45 and 102,733.10

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Solution

The fourth proportional to 121,978.70, 183,405.45 and 102,733.10 is: 154,468.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,978.70 : 183,405.45 = 102,733.10 : x
  2. Step 2: Convert to fraction form
    121,978.70/183,405.45 = 102,733.10/x
  3. Step 3: Cross multiply
    121,978.70x = 183,405.45 × 102,733.10
  4. Step 4: Simplify right side
    121,978.70x = 18,841,810,435.40
  5. Step 5: Solve for x
    x = 18,841,810,435.40/121,978.70
  6. Step 6: Final answer
    x = 154,468.04

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.