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Finding the Fourth Proportional to 136,113.60, 204,364.80 and 103,065.60

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Solution

The fourth proportional to 136,113.60, 204,364.80 and 103,065.60 is: 154,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,113.60 : 204,364.80 = 103,065.60 : x
  2. Step 2: Convert to fraction form
    136,113.60/204,364.80 = 103,065.60/x
  3. Step 3: Cross multiply
    136,113.60x = 204,364.80 × 103,065.60
  4. Step 4: Simplify right side
    136,113.60x = 21,062,980,730.88
  5. Step 5: Solve for x
    x = 21,062,980,730.88/136,113.60
  6. Step 6: Final answer
    x = 154,745.60

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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.