Home / 138,198.32-206,288.14-118,602.80

Finding the Fourth Proportional to 138,198.32, 206,288.14 and 118,602.80

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Solution

The fourth proportional to 138,198.32, 206,288.14 and 118,602.80 is: 177,037.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,198.32 : 206,288.14 = 118,602.80 : x
  2. Step 2: Convert to fraction form
    138,198.32/206,288.14 = 118,602.80/x
  3. Step 3: Cross multiply
    138,198.32x = 206,288.14 × 118,602.80
  4. Step 4: Simplify right side
    138,198.32x = 24,466,351,010.79
  5. Step 5: Solve for x
    x = 24,466,351,010.79/138,198.32
  6. Step 6: Final answer
    x = 177,037.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.