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Finding the Fourth Proportional to 105,810.60, 158,715.90 and 104,255.40

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Solution

The fourth proportional to 105,810.60, 158,715.90 and 104,255.40 is: 156,383.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,810.60 : 158,715.90 = 104,255.40 : x
  2. Step 2: Convert to fraction form
    105,810.60/158,715.90 = 104,255.40/x
  3. Step 3: Cross multiply
    105,810.60x = 158,715.90 × 104,255.40
  4. Step 4: Simplify right side
    105,810.60x = 16,546,989,640.86
  5. Step 5: Solve for x
    x = 16,546,989,640.86/105,810.60
  6. Step 6: Final answer
    x = 156,383.10

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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.