Home / 153,121.20-229,033.80-137,439.60

Finding the Fourth Proportional to 153,121.20, 229,033.80 and 137,439.60

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Solution

The fourth proportional to 153,121.20, 229,033.80 and 137,439.60 is: 205,577.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,121.20 : 229,033.80 = 137,439.60 : x
  2. Step 2: Convert to fraction form
    153,121.20/229,033.80 = 137,439.60/x
  3. Step 3: Cross multiply
    153,121.20x = 229,033.80 × 137,439.60
  4. Step 4: Simplify right side
    153,121.20x = 31,478,313,858.48
  5. Step 5: Solve for x
    x = 31,478,313,858.48/153,121.20
  6. Step 6: Final answer
    x = 205,577.76

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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.