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Finding the Fourth Proportional to 111,302.10, 166,843.80 and 99,492.30

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Solution

The fourth proportional to 111,302.10, 166,843.80 and 99,492.30 is: 149,140.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,302.10 : 166,843.80 = 99,492.30 : x
  2. Step 2: Convert to fraction form
    111,302.10/166,843.80 = 99,492.30/x
  3. Step 3: Cross multiply
    111,302.10x = 166,843.80 × 99,492.30
  4. Step 4: Simplify right side
    111,302.10x = 16,599,673,402.74
  5. Step 5: Solve for x
    x = 16,599,673,402.74/111,302.10
  6. Step 6: Final answer
    x = 149,140.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.