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Finding the Fourth Proportional to 109,774.40, 164,661.60 and 102,401.60

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Solution

The fourth proportional to 109,774.40, 164,661.60 and 102,401.60 is: 153,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,774.40 : 164,661.60 = 102,401.60 : x
  2. Step 2: Convert to fraction form
    109,774.40/164,661.60 = 102,401.60/x
  3. Step 3: Cross multiply
    109,774.40x = 164,661.60 × 102,401.60
  4. Step 4: Simplify right side
    109,774.40x = 16,861,611,298.56
  5. Step 5: Solve for x
    x = 16,861,611,298.56/109,774.40
  6. Step 6: Final answer
    x = 153,602.40

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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.