Home / 138,986.76-191,801.70-75,324.55

Finding the Fourth Proportional to 138,986.76, 191,801.70 and 75,324.55

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Solution

The fourth proportional to 138,986.76, 191,801.70 and 75,324.55 is: 103,947.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,986.76 : 191,801.70 = 75,324.55 : x
  2. Step 2: Convert to fraction form
    138,986.76/191,801.70 = 75,324.55/x
  3. Step 3: Cross multiply
    138,986.76x = 191,801.70 × 75,324.55
  4. Step 4: Simplify right side
    138,986.76x = 14,447,376,741.74
  5. Step 5: Solve for x
    x = 14,447,376,741.74/138,986.76
  6. Step 6: Final answer
    x = 103,947.86

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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.