Home / 138,648.26-191,334.60-74,986.04

Finding the Fourth Proportional to 138,648.26, 191,334.60 and 74,986.04

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Solution

The fourth proportional to 138,648.26, 191,334.60 and 74,986.04 is: 103,480.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,648.26 : 191,334.60 = 74,986.04 : x
  2. Step 2: Convert to fraction form
    138,648.26/191,334.60 = 74,986.04/x
  3. Step 3: Cross multiply
    138,648.26x = 191,334.60 × 74,986.04
  4. Step 4: Simplify right side
    138,648.26x = 14,347,423,968.98
  5. Step 5: Solve for x
    x = 14,347,423,968.98/138,648.26
  6. Step 6: Final answer
    x = 103,480.74

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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.