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Finding the Fourth Proportional to 125,168.84, 187,751.21 and 30,399.80

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Solution

The fourth proportional to 125,168.84, 187,751.21 and 30,399.80 is: 45,599.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,168.84 : 187,751.21 = 30,399.80 : x
  2. Step 2: Convert to fraction form
    125,168.84/187,751.21 = 30,399.80/x
  3. Step 3: Cross multiply
    125,168.84x = 187,751.21 × 30,399.80
  4. Step 4: Simplify right side
    125,168.84x = 5,707,599,627.14
  5. Step 5: Solve for x
    x = 5,707,599,627.14/125,168.84
  6. Step 6: Final answer
    x = 45,599.20

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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.