Home / 138,840.10-208,260.15-50,107.30

Finding the Fourth Proportional to 138,840.10, 208,260.15 and 50,107.30

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Solution

The fourth proportional to 138,840.10, 208,260.15 and 50,107.30 is: 75,160.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,840.10 : 208,260.15 = 50,107.30 : x
  2. Step 2: Convert to fraction form
    138,840.10/208,260.15 = 50,107.30/x
  3. Step 3: Cross multiply
    138,840.10x = 208,260.15 × 50,107.30
  4. Step 4: Simplify right side
    138,840.10x = 10,435,353,814.10
  5. Step 5: Solve for x
    x = 10,435,353,814.10/138,840.10
  6. Step 6: Final answer
    x = 75,160.95

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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.