Home / 144,721.78-199,613.43-90,301.36

Finding the Fourth Proportional to 144,721.78, 199,613.43 and 90,301.36

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Solution

The fourth proportional to 144,721.78, 199,613.43 and 90,301.36 is: 124,551.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,721.78 : 199,613.43 = 90,301.36 : x
  2. Step 2: Convert to fraction form
    144,721.78/199,613.43 = 90,301.36/x
  3. Step 3: Cross multiply
    144,721.78x = 199,613.43 × 90,301.36
  4. Step 4: Simplify right side
    144,721.78x = 18,025,364,203.26
  5. Step 5: Solve for x
    x = 18,025,364,203.26/144,721.78
  6. Step 6: Final answer
    x = 124,551.84

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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.