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Finding the Fourth Proportional to 154,518.48, 213,262.20 and 87,450.48

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Solution

The fourth proportional to 154,518.48, 213,262.20 and 87,450.48 is: 120,696.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,518.48 : 213,262.20 = 87,450.48 : x
  2. Step 2: Convert to fraction form
    154,518.48/213,262.20 = 87,450.48/x
  3. Step 3: Cross multiply
    154,518.48x = 213,262.20 × 87,450.48
  4. Step 4: Simplify right side
    154,518.48x = 18,649,881,755.86
  5. Step 5: Solve for x
    x = 18,649,881,755.86/154,518.48
  6. Step 6: Final answer
    x = 120,696.77

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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.