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Finding the Fourth Proportional to 112,850.79, 155,733.08 and 61,866.42

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Solution

The fourth proportional to 112,850.79, 155,733.08 and 61,866.42 is: 85,375.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,850.79 : 155,733.08 = 61,866.42 : x
  2. Step 2: Convert to fraction form
    112,850.79/155,733.08 = 61,866.42/x
  3. Step 3: Cross multiply
    112,850.79x = 155,733.08 × 61,866.42
  4. Step 4: Simplify right side
    112,850.79x = 9,634,647,825.84
  5. Step 5: Solve for x
    x = 9,634,647,825.84/112,850.79
  6. Step 6: Final answer
    x = 85,375.10

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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.