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Finding the Fourth Proportional to 154,492.70, 213,089.91 and 141,786.86

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Solution

The fourth proportional to 154,492.70, 213,089.91 and 141,786.86 is: 195,564.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,492.70 : 213,089.91 = 141,786.86 : x
  2. Step 2: Convert to fraction form
    154,492.70/213,089.91 = 141,786.86/x
  3. Step 3: Cross multiply
    154,492.70x = 213,089.91 × 141,786.86
  4. Step 4: Simplify right side
    154,492.70x = 30,213,349,236.58
  5. Step 5: Solve for x
    x = 30,213,349,236.58/154,492.70
  6. Step 6: Final answer
    x = 195,564.90

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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.