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Finding the Fourth Proportional to 122,431.80, 183,561.30 and 55,903.80

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Solution

The fourth proportional to 122,431.80, 183,561.30 and 55,903.80 is: 83,816.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,431.80 : 183,561.30 = 55,903.80 : x
  2. Step 2: Convert to fraction form
    122,431.80/183,561.30 = 55,903.80/x
  3. Step 3: Cross multiply
    122,431.80x = 183,561.30 × 55,903.80
  4. Step 4: Simplify right side
    122,431.80x = 10,261,774,202.94
  5. Step 5: Solve for x
    x = 10,261,774,202.94/122,431.80
  6. Step 6: Final answer
    x = 83,816.25

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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.