Home / 177,610.09-245,016.47-129,136.90

Finding the Fourth Proportional to 177,610.09, 245,016.47 and 129,136.90

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Solution

The fourth proportional to 177,610.09, 245,016.47 and 129,136.90 is: 178,146.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,610.09 : 245,016.47 = 129,136.90 : x
  2. Step 2: Convert to fraction form
    177,610.09/245,016.47 = 129,136.90/x
  3. Step 3: Cross multiply
    177,610.09x = 245,016.47 × 129,136.90
  4. Step 4: Simplify right side
    177,610.09x = 31,640,667,707.59
  5. Step 5: Solve for x
    x = 31,640,667,707.59/177,610.09
  6. Step 6: Final answer
    x = 178,146.79

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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.