Home / 137,414.24-189,628.32-76,987.40

Finding the Fourth Proportional to 137,414.24, 189,628.32 and 76,987.40

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Solution

The fourth proportional to 137,414.24, 189,628.32 and 76,987.40 is: 106,240.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,414.24 : 189,628.32 = 76,987.40 : x
  2. Step 2: Convert to fraction form
    137,414.24/189,628.32 = 76,987.40/x
  3. Step 3: Cross multiply
    137,414.24x = 189,628.32 × 76,987.40
  4. Step 4: Simplify right side
    137,414.24x = 14,598,991,323.17
  5. Step 5: Solve for x
    x = 14,598,991,323.17/137,414.24
  6. Step 6: Final answer
    x = 106,240.75

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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.