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Finding the Fourth Proportional to 123,885.80, 185,771.90 and 39,629.56

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Solution

The fourth proportional to 123,885.80, 185,771.90 and 39,629.56 is: 59,426.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,885.80 : 185,771.90 = 39,629.56 : x
  2. Step 2: Convert to fraction form
    123,885.80/185,771.90 = 39,629.56/x
  3. Step 3: Cross multiply
    123,885.80x = 185,771.90 × 39,629.56
  4. Step 4: Simplify right side
    123,885.80x = 7,362,058,657.36
  5. Step 5: Solve for x
    x = 7,362,058,657.36/123,885.80
  6. Step 6: Final answer
    x = 59,426.17

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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.