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Finding the Fourth Proportional to 136,668.60, 204,905.70 and 52,396.20

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Solution

The fourth proportional to 136,668.60, 204,905.70 and 52,396.20 is: 78,557.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,668.60 : 204,905.70 = 52,396.20 : x
  2. Step 2: Convert to fraction form
    136,668.60/204,905.70 = 52,396.20/x
  3. Step 3: Cross multiply
    136,668.60x = 204,905.70 × 52,396.20
  4. Step 4: Simplify right side
    136,668.60x = 10,736,280,038.34
  5. Step 5: Solve for x
    x = 10,736,280,038.34/136,668.60
  6. Step 6: Final answer
    x = 78,557.04

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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.