Home / 138,989.83-208,485.05-50,243.20

Finding the Fourth Proportional to 138,989.83, 208,485.05 and 50,243.20

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Solution

The fourth proportional to 138,989.83, 208,485.05 and 50,243.20 is: 75,364.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,989.83 : 208,485.05 = 50,243.20 : x
  2. Step 2: Convert to fraction form
    138,989.83/208,485.05 = 50,243.20/x
  3. Step 3: Cross multiply
    138,989.83x = 208,485.05 × 50,243.20
  4. Step 4: Simplify right side
    138,989.83x = 10,474,956,064.16
  5. Step 5: Solve for x
    x = 10,474,956,064.16/138,989.83
  6. Step 6: Final answer
    x = 75,364.91

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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.