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Finding the Fourth Proportional to 122,172.58, 183,146.11 and 84,750.31

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Solution

The fourth proportional to 122,172.58, 183,146.11 and 84,750.31 is: 127,047.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,172.58 : 183,146.11 = 84,750.31 : x
  2. Step 2: Convert to fraction form
    122,172.58/183,146.11 = 84,750.31/x
  3. Step 3: Cross multiply
    122,172.58x = 183,146.11 × 84,750.31
  4. Step 4: Simplify right side
    122,172.58x = 15,521,688,928.05
  5. Step 5: Solve for x
    x = 15,521,688,928.05/122,172.58
  6. Step 6: Final answer
    x = 127,047.24

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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.