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Finding the Fourth Proportional to 122,295.80, 183,443.70 and 102,612.80

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Solution

The fourth proportional to 122,295.80, 183,443.70 and 102,612.80 is: 153,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,295.80 : 183,443.70 = 102,612.80 : x
  2. Step 2: Convert to fraction form
    122,295.80/183,443.70 = 102,612.80/x
  3. Step 3: Cross multiply
    122,295.80x = 183,443.70 × 102,612.80
  4. Step 4: Simplify right side
    122,295.80x = 18,823,671,699.36
  5. Step 5: Solve for x
    x = 18,823,671,699.36/122,295.80
  6. Step 6: Final answer
    x = 153,919.20

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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.