Home / 131,139.69-181,001.39-83,383.71

Finding the Fourth Proportional to 131,139.69, 181,001.39 and 83,383.71

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Solution

The fourth proportional to 131,139.69, 181,001.39 and 83,383.71 is: 115,087.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,139.69 : 181,001.39 = 83,383.71 : x
  2. Step 2: Convert to fraction form
    131,139.69/181,001.39 = 83,383.71/x
  3. Step 3: Cross multiply
    131,139.69x = 181,001.39 × 83,383.71
  4. Step 4: Simplify right side
    131,139.69x = 15,092,566,996.44
  5. Step 5: Solve for x
    x = 15,092,566,996.44/131,139.69
  6. Step 6: Final answer
    x = 115,087.71

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1.5x scale

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.