Home / 138,465.29-191,093.33-78,040.02

Finding the Fourth Proportional to 138,465.29, 191,093.33 and 78,040.02

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Solution

The fourth proportional to 138,465.29, 191,093.33 and 78,040.02 is: 107,701.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,465.29 : 191,093.33 = 78,040.02 : x
  2. Step 2: Convert to fraction form
    138,465.29/191,093.33 = 78,040.02/x
  3. Step 3: Cross multiply
    138,465.29x = 191,093.33 × 78,040.02
  4. Step 4: Simplify right side
    138,465.29x = 14,912,926,904.87
  5. Step 5: Solve for x
    x = 14,912,926,904.87/138,465.29
  6. Step 6: Final answer
    x = 107,701.56

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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.