Home / 131,815.54-181,918.47-75,235.42

Finding the Fourth Proportional to 131,815.54, 181,918.47 and 75,235.42

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Solution

The fourth proportional to 131,815.54, 181,918.47 and 75,235.42 is: 103,832.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,815.54 : 181,918.47 = 75,235.42 : x
  2. Step 2: Convert to fraction form
    131,815.54/181,918.47 = 75,235.42/x
  3. Step 3: Cross multiply
    131,815.54x = 181,918.47 × 75,235.42
  4. Step 4: Simplify right side
    131,815.54x = 13,686,712,496.21
  5. Step 5: Solve for x
    x = 13,686,712,496.21/131,815.54
  6. Step 6: Final answer
    x = 103,832.31

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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.