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Finding the Fourth Proportional to 153,861.30, 212,492.29 and 117,170.27

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Solution

The fourth proportional to 153,861.30, 212,492.29 and 117,170.27 is: 161,819.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,861.30 : 212,492.29 = 117,170.27 : x
  2. Step 2: Convert to fraction form
    153,861.30/212,492.29 = 117,170.27/x
  3. Step 3: Cross multiply
    153,861.30x = 212,492.29 × 117,170.27
  4. Step 4: Simplify right side
    153,861.30x = 24,897,778,992.22
  5. Step 5: Solve for x
    x = 24,897,778,992.22/153,861.30
  6. Step 6: Final answer
    x = 161,819.63

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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.