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Finding the Fourth Proportional to 111,885.80, 167,675.10 and 91,149.80

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Solution

The fourth proportional to 111,885.80, 167,675.10 and 91,149.80 is: 136,599.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,885.80 : 167,675.10 = 91,149.80 : x
  2. Step 2: Convert to fraction form
    111,885.80/167,675.10 = 91,149.80/x
  3. Step 3: Cross multiply
    111,885.80x = 167,675.10 × 91,149.80
  4. Step 4: Simplify right side
    111,885.80x = 15,283,551,829.98
  5. Step 5: Solve for x
    x = 15,283,551,829.98/111,885.80
  6. Step 6: Final answer
    x = 136,599.57

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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.