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Finding the Fourth Proportional to 136,974.60, 205,364.70 and 52,702.20

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Solution

The fourth proportional to 136,974.60, 205,364.70 and 52,702.20 is: 79,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,974.60 : 205,364.70 = 52,702.20 : x
  2. Step 2: Convert to fraction form
    136,974.60/205,364.70 = 52,702.20/x
  3. Step 3: Cross multiply
    136,974.60x = 205,364.70 × 52,702.20
  4. Step 4: Simplify right side
    136,974.60x = 10,823,171,492.34
  5. Step 5: Solve for x
    x = 10,823,171,492.34/136,974.60
  6. Step 6: Final answer
    x = 79,015.90

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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.