Home / 91,189.71-125,789.22-54,865.98

Finding the Fourth Proportional to 91,189.71, 125,789.22 and 54,865.98

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Solution

The fourth proportional to 91,189.71, 125,789.22 and 54,865.98 is: 75,683.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,189.71 : 125,789.22 = 54,865.98 : x
  2. Step 2: Convert to fraction form
    91,189.71/125,789.22 = 54,865.98/x
  3. Step 3: Cross multiply
    91,189.71x = 125,789.22 × 54,865.98
  4. Step 4: Simplify right side
    91,189.71x = 6,901,548,828.74
  5. Step 5: Solve for x
    x = 6,901,548,828.74/91,189.71
  6. Step 6: Final answer
    x = 75,683.42

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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.