Home / 138,246.91-190,811.84-90,472.57

Finding the Fourth Proportional to 138,246.91, 190,811.84 and 90,472.57

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Solution

The fourth proportional to 138,246.91, 190,811.84 and 90,472.57 is: 124,872.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,246.91 : 190,811.84 = 90,472.57 : x
  2. Step 2: Convert to fraction form
    138,246.91/190,811.84 = 90,472.57/x
  3. Step 3: Cross multiply
    138,246.91x = 190,811.84 × 90,472.57
  4. Step 4: Simplify right side
    138,246.91x = 17,263,236,621.84
  5. Step 5: Solve for x
    x = 17,263,236,621.84/138,246.91
  6. Step 6: Final answer
    x = 124,872.50

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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.