Home / 138,861.12-208,284.72-48,908.28

Finding the Fourth Proportional to 138,861.12, 208,284.72 and 48,908.28

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Solution

The fourth proportional to 138,861.12, 208,284.72 and 48,908.28 is: 73,359.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,861.12 : 208,284.72 = 48,908.28 : x
  2. Step 2: Convert to fraction form
    138,861.12/208,284.72 = 48,908.28/x
  3. Step 3: Cross multiply
    138,861.12x = 208,284.72 × 48,908.28
  4. Step 4: Simplify right side
    138,861.12x = 10,186,847,405.48
  5. Step 5: Solve for x
    x = 10,186,847,405.48/138,861.12
  6. Step 6: Final answer
    x = 73,359.97

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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.