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Finding the Fourth Proportional to 123,390.75, 185,086.14 and 40,284.75

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Solution

The fourth proportional to 123,390.75, 185,086.14 and 40,284.75 is: 60,427.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,390.75 : 185,086.14 = 40,284.75 : x
  2. Step 2: Convert to fraction form
    123,390.75/185,086.14 = 40,284.75/x
  3. Step 3: Cross multiply
    123,390.75x = 185,086.14 × 40,284.75
  4. Step 4: Simplify right side
    123,390.75x = 7,456,148,878.37
  5. Step 5: Solve for x
    x = 7,456,148,878.37/123,390.75
  6. Step 6: Final answer
    x = 60,427.13

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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.