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Finding the Fourth Proportional to 123,814.40, 185,770.20 and 48,921.80

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Solution

The fourth proportional to 123,814.40, 185,770.20 and 48,921.80 is: 73,401.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,814.40 : 185,770.20 = 48,921.80 : x
  2. Step 2: Convert to fraction form
    123,814.40/185,770.20 = 48,921.80/x
  3. Step 3: Cross multiply
    123,814.40x = 185,770.20 × 48,921.80
  4. Step 4: Simplify right side
    123,814.40x = 9,088,212,570.36
  5. Step 5: Solve for x
    x = 9,088,212,570.36/123,814.40
  6. Step 6: Final answer
    x = 73,401.90

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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.