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Finding the Fourth Proportional to 122,013.20, 183,019.80 and 43,126.80

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Solution

The fourth proportional to 122,013.20, 183,019.80 and 43,126.80 is: 64,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,013.20 : 183,019.80 = 43,126.80 : x
  2. Step 2: Convert to fraction form
    122,013.20/183,019.80 = 43,126.80/x
  3. Step 3: Cross multiply
    122,013.20x = 183,019.80 × 43,126.80
  4. Step 4: Simplify right side
    122,013.20x = 7,893,058,310.64
  5. Step 5: Solve for x
    x = 7,893,058,310.64/122,013.20
  6. Step 6: Final answer
    x = 64,690.20

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1.5x scale

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.