Home / 136,400.80-204,601.20-115,405.60

Finding the Fourth Proportional to 136,400.80, 204,601.20 and 115,405.60

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Solution

The fourth proportional to 136,400.80, 204,601.20 and 115,405.60 is: 173,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,400.80 : 204,601.20 = 115,405.60 : x
  2. Step 2: Convert to fraction form
    136,400.80/204,601.20 = 115,405.60/x
  3. Step 3: Cross multiply
    136,400.80x = 204,601.20 × 115,405.60
  4. Step 4: Simplify right side
    136,400.80x = 23,612,124,246.72
  5. Step 5: Solve for x
    x = 23,612,124,246.72/136,400.80
  6. Step 6: Final answer
    x = 173,108.40

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1.5x scale

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.