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Finding the Fourth Proportional to 109,495.44, 151,103.88 and 61,748.64

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Solution

The fourth proportional to 109,495.44, 151,103.88 and 61,748.64 is: 85,213.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,495.44 : 151,103.88 = 61,748.64 : x
  2. Step 2: Convert to fraction form
    109,495.44/151,103.88 = 61,748.64/x
  3. Step 3: Cross multiply
    109,495.44x = 151,103.88 × 61,748.64
  4. Step 4: Simplify right side
    109,495.44x = 9,330,459,088.72
  5. Step 5: Solve for x
    x = 9,330,459,088.72/109,495.44
  6. Step 6: Final answer
    x = 85,213.22

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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.