Home / 150,971.72-208,340.97-87,313.62

Finding the Fourth Proportional to 150,971.72, 208,340.97 and 87,313.62

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Solution

The fourth proportional to 150,971.72, 208,340.97 and 87,313.62 is: 120,492.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,971.72 : 208,340.97 = 87,313.62 : x
  2. Step 2: Convert to fraction form
    150,971.72/208,340.97 = 87,313.62/x
  3. Step 3: Cross multiply
    150,971.72x = 208,340.97 × 87,313.62
  4. Step 4: Simplify right side
    150,971.72x = 18,191,003,831.16
  5. Step 5: Solve for x
    x = 18,191,003,831.16/150,971.72
  6. Step 6: Final answer
    x = 120,492.79

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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.