Home / 157,582.09-217,481.39-87,738.49

Finding the Fourth Proportional to 157,582.09, 217,481.39 and 87,738.49

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Solution

The fourth proportional to 157,582.09, 217,481.39 and 87,738.49 is: 121,089.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,582.09 : 217,481.39 = 87,738.49 : x
  2. Step 2: Convert to fraction form
    157,582.09/217,481.39 = 87,738.49/x
  3. Step 3: Cross multiply
    157,582.09x = 217,481.39 × 87,738.49
  4. Step 4: Simplify right side
    157,582.09x = 19,081,488,761.70
  5. Step 5: Solve for x
    x = 19,081,488,761.70/157,582.09
  6. Step 6: Final answer
    x = 121,089.20

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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.