Home / 157,582.41-217,481.81-87,738.72

Finding the Fourth Proportional to 157,582.41, 217,481.81 and 87,738.72

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Solution

The fourth proportional to 157,582.41, 217,481.81 and 87,738.72 is: 121,089.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,582.41 : 217,481.81 = 87,738.72 : x
  2. Step 2: Convert to fraction form
    157,582.41/217,481.81 = 87,738.72/x
  3. Step 3: Cross multiply
    157,582.41x = 217,481.81 × 87,738.72
  4. Step 4: Simplify right side
    157,582.41x = 19,081,575,193.99
  5. Step 5: Solve for x
    x = 19,081,575,193.99/157,582.41
  6. Step 6: Final answer
    x = 121,089.50

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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.