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Finding the Fourth Proportional to 123,907.20, 185,933.70 and 45,029.40

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Solution

The fourth proportional to 123,907.20, 185,933.70 and 45,029.40 is: 67,570.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,907.20 : 185,933.70 = 45,029.40 : x
  2. Step 2: Convert to fraction form
    123,907.20/185,933.70 = 45,029.40/x
  3. Step 3: Cross multiply
    123,907.20x = 185,933.70 × 45,029.40
  4. Step 4: Simplify right side
    123,907.20x = 8,372,482,950.78
  5. Step 5: Solve for x
    x = 8,372,482,950.78/123,907.20
  6. Step 6: Final answer
    x = 67,570.59

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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.