Home / 207,868.55-286,851.62-131,428.79

Finding the Fourth Proportional to 207,868.55, 286,851.62 and 131,428.79

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Solution

The fourth proportional to 207,868.55, 286,851.62 and 131,428.79 is: 181,367.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,868.55 : 286,851.62 = 131,428.79 : x
  2. Step 2: Convert to fraction form
    207,868.55/286,851.62 = 131,428.79/x
  3. Step 3: Cross multiply
    207,868.55x = 286,851.62 × 131,428.79
  4. Step 4: Simplify right side
    207,868.55x = 37,700,560,669.00
  5. Step 5: Solve for x
    x = 37,700,560,669.00/207,868.55
  6. Step 6: Final answer
    x = 181,367.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.