Home / 138,801.36-191,546.48-75,139.15

Finding the Fourth Proportional to 138,801.36, 191,546.48 and 75,139.15

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Solution

The fourth proportional to 138,801.36, 191,546.48 and 75,139.15 is: 103,692.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,801.36 : 191,546.48 = 75,139.15 : x
  2. Step 2: Convert to fraction form
    138,801.36/191,546.48 = 75,139.15/x
  3. Step 3: Cross multiply
    138,801.36x = 191,546.48 × 75,139.15
  4. Step 4: Simplify right side
    138,801.36x = 14,392,639,692.69
  5. Step 5: Solve for x
    x = 14,392,639,692.69/138,801.36
  6. Step 6: Final answer
    x = 103,692.36

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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.