Home / 207,681.22-312,172.10-137,057.69

Finding the Fourth Proportional to 207,681.22, 312,172.10 and 137,057.69

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Solution

The fourth proportional to 207,681.22, 312,172.10 and 137,057.69 is: 206,015.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,681.22 : 312,172.10 = 137,057.69 : x
  2. Step 2: Convert to fraction form
    207,681.22/312,172.10 = 137,057.69/x
  3. Step 3: Cross multiply
    207,681.22x = 312,172.10 × 137,057.69
  4. Step 4: Simplify right side
    207,681.22x = 42,785,586,908.45
  5. Step 5: Solve for x
    x = 42,785,586,908.45/207,681.22
  6. Step 6: Final answer
    x = 206,015.68

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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.