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Finding the Fourth Proportional to 122,713.60, 183,843.60 and 69,966.40

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Solution

The fourth proportional to 122,713.60, 183,843.60 and 69,966.40 is: 104,820.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,713.60 : 183,843.60 = 69,966.40 : x
  2. Step 2: Convert to fraction form
    122,713.60/183,843.60 = 69,966.40/x
  3. Step 3: Cross multiply
    122,713.60x = 183,843.60 × 69,966.40
  4. Step 4: Simplify right side
    122,713.60x = 12,862,874,855.04
  5. Step 5: Solve for x
    x = 12,862,874,855.04/122,713.60
  6. Step 6: Final answer
    x = 104,820.29

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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.