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Finding the Fourth Proportional to 145,087.80, 199,891.80 and 112,269.38

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Solution

The fourth proportional to 145,087.80, 199,891.80 and 112,269.38 is: 154,676.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,087.80 : 199,891.80 = 112,269.38 : x
  2. Step 2: Convert to fraction form
    145,087.80/199,891.80 = 112,269.38/x
  3. Step 3: Cross multiply
    145,087.80x = 199,891.80 × 112,269.38
  4. Step 4: Simplify right side
    145,087.80x = 22,441,728,453.08
  5. Step 5: Solve for x
    x = 22,441,728,453.08/145,087.80
  6. Step 6: Final answer
    x = 154,676.88

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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.