Home / 138,941.73-191,739.60-75,279.52

Finding the Fourth Proportional to 138,941.73, 191,739.60 and 75,279.52

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Solution

The fourth proportional to 138,941.73, 191,739.60 and 75,279.52 is: 103,885.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,941.73 : 191,739.60 = 75,279.52 : x
  2. Step 2: Convert to fraction form
    138,941.73/191,739.60 = 75,279.52/x
  3. Step 3: Cross multiply
    138,941.73x = 191,739.60 × 75,279.52
  4. Step 4: Simplify right side
    138,941.73x = 14,434,065,052.99
  5. Step 5: Solve for x
    x = 14,434,065,052.99/138,941.73
  6. Step 6: Final answer
    x = 103,885.74

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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.