Home / 145,515.80-218,273.70-115,772.60

Finding the Fourth Proportional to 145,515.80, 218,273.70 and 115,772.60

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Solution

The fourth proportional to 145,515.80, 218,273.70 and 115,772.60 is: 173,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,515.80 : 218,273.70 = 115,772.60 : x
  2. Step 2: Convert to fraction form
    145,515.80/218,273.70 = 115,772.60/x
  3. Step 3: Cross multiply
    145,515.80x = 218,273.70 × 115,772.60
  4. Step 4: Simplify right side
    145,515.80x = 25,270,113,760.62
  5. Step 5: Solve for x
    x = 25,270,113,760.62/145,515.80
  6. Step 6: Final answer
    x = 173,658.90

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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.