Home / 131,438.69-181,386.54-74,067.02

Finding the Fourth Proportional to 131,438.69, 181,386.54 and 74,067.02

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Solution

The fourth proportional to 131,438.69, 181,386.54 and 74,067.02 is: 102,213.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,438.69 : 181,386.54 = 74,067.02 : x
  2. Step 2: Convert to fraction form
    131,438.69/181,386.54 = 74,067.02/x
  3. Step 3: Cross multiply
    131,438.69x = 181,386.54 × 74,067.02
  4. Step 4: Simplify right side
    131,438.69x = 13,434,759,578.98
  5. Step 5: Solve for x
    x = 13,434,759,578.98/131,438.69
  6. Step 6: Final answer
    x = 102,213.13

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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.