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Finding the Fourth Proportional to 111,732.68, 154,193.82 and 61,431.68

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Solution

The fourth proportional to 111,732.68, 154,193.82 and 61,431.68 is: 84,777.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,732.68 : 154,193.82 = 61,431.68 : x
  2. Step 2: Convert to fraction form
    111,732.68/154,193.82 = 61,431.68/x
  3. Step 3: Cross multiply
    111,732.68x = 154,193.82 × 61,431.68
  4. Step 4: Simplify right side
    111,732.68x = 9,472,385,408.22
  5. Step 5: Solve for x
    x = 9,472,385,408.22/111,732.68
  6. Step 6: Final answer
    x = 84,777.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.