Home / 123,211.20-184,903.20-53,140.80

Finding the Fourth Proportional to 123,211.20, 184,903.20 and 53,140.80

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Solution

The fourth proportional to 123,211.20, 184,903.20 and 53,140.80 is: 79,748.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,211.20 : 184,903.20 = 53,140.80 : x
  2. Step 2: Convert to fraction form
    123,211.20/184,903.20 = 53,140.80/x
  3. Step 3: Cross multiply
    123,211.20x = 184,903.20 × 53,140.80
  4. Step 4: Simplify right side
    123,211.20x = 9,825,903,970.56
  5. Step 5: Solve for x
    x = 9,825,903,970.56/123,211.20
  6. Step 6: Final answer
    x = 79,748.46

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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.