Home / 138,897.92-191,504.88-113,378.36

Finding the Fourth Proportional to 138,897.92, 191,504.88 and 113,378.36

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Solution

The fourth proportional to 138,897.92, 191,504.88 and 113,378.36 is: 156,319.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,897.92 : 191,504.88 = 113,378.36 : x
  2. Step 2: Convert to fraction form
    138,897.92/191,504.88 = 113,378.36/x
  3. Step 3: Cross multiply
    138,897.92x = 191,504.88 × 113,378.36
  4. Step 4: Simplify right side
    138,897.92x = 21,712,508,268.87
  5. Step 5: Solve for x
    x = 21,712,508,268.87/138,897.92
  6. Step 6: Final answer
    x = 156,319.89

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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.