Home / 272,023.20-407,840.40-122,140.80

Finding the Fourth Proportional to 272,023.20, 407,840.40 and 122,140.80

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Solution

The fourth proportional to 272,023.20, 407,840.40 and 122,140.80 is: 183,123.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,023.20 : 407,840.40 = 122,140.80 : x
  2. Step 2: Convert to fraction form
    272,023.20/407,840.40 = 122,140.80/x
  3. Step 3: Cross multiply
    272,023.20x = 407,840.40 × 122,140.80
  4. Step 4: Simplify right side
    272,023.20x = 49,813,952,728.32
  5. Step 5: Solve for x
    x = 49,813,952,728.32/272,023.20
  6. Step 6: Final answer
    x = 183,123.91

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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.