Home / 123,669.12-185,503.84-30,174.40

Finding the Fourth Proportional to 123,669.12, 185,503.84 and 30,174.40

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Solution

The fourth proportional to 123,669.12, 185,503.84 and 30,174.40 is: 45,261.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,669.12 : 185,503.84 = 30,174.40 : x
  2. Step 2: Convert to fraction form
    123,669.12/185,503.84 = 30,174.40/x
  3. Step 3: Cross multiply
    123,669.12x = 185,503.84 × 30,174.40
  4. Step 4: Simplify right side
    123,669.12x = 5,597,467,069.70
  5. Step 5: Solve for x
    x = 5,597,467,069.70/123,669.12
  6. Step 6: Final answer
    x = 45,261.64

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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.