Home / 138,469.06-191,087.40-74,806.84

Finding the Fourth Proportional to 138,469.06, 191,087.40 and 74,806.84

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Solution

The fourth proportional to 138,469.06, 191,087.40 and 74,806.84 is: 103,233.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,469.06 : 191,087.40 = 74,806.84 : x
  2. Step 2: Convert to fraction form
    138,469.06/191,087.40 = 74,806.84/x
  3. Step 3: Cross multiply
    138,469.06x = 191,087.40 × 74,806.84
  4. Step 4: Simplify right side
    138,469.06x = 14,294,644,557.82
  5. Step 5: Solve for x
    x = 14,294,644,557.82/138,469.06
  6. Step 6: Final answer
    x = 103,233.49

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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.