Home / 137,698.88-190,039.02-77,285.84

Finding the Fourth Proportional to 137,698.88, 190,039.02 and 77,285.84

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Solution

The fourth proportional to 137,698.88, 190,039.02 and 77,285.84 is: 106,662.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,698.88 : 190,039.02 = 77,285.84 : x
  2. Step 2: Convert to fraction form
    137,698.88/190,039.02 = 77,285.84/x
  3. Step 3: Cross multiply
    137,698.88x = 190,039.02 × 77,285.84
  4. Step 4: Simplify right side
    137,698.88x = 14,687,325,293.48
  5. Step 5: Solve for x
    x = 14,687,325,293.48/137,698.88
  6. Step 6: Final answer
    x = 106,662.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.