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Finding the Fourth Proportional to 111,075.81, 166,616.90 and 43,605.05

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Solution

The fourth proportional to 111,075.81, 166,616.90 and 43,605.05 is: 65,408.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,075.81 : 166,616.90 = 43,605.05 : x
  2. Step 2: Convert to fraction form
    111,075.81/166,616.90 = 43,605.05/x
  3. Step 3: Cross multiply
    111,075.81x = 166,616.90 × 43,605.05
  4. Step 4: Simplify right side
    111,075.81x = 7,265,337,204.24
  5. Step 5: Solve for x
    x = 7,265,337,204.24/111,075.81
  6. Step 6: Final answer
    x = 65,408.82

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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.