Home / 138,840.06-191,599.39-75,177.91

Finding the Fourth Proportional to 138,840.06, 191,599.39 and 75,177.91

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Solution

The fourth proportional to 138,840.06, 191,599.39 and 75,177.91 is: 103,745.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,840.06 : 191,599.39 = 75,177.91 : x
  2. Step 2: Convert to fraction form
    138,840.06/191,599.39 = 75,177.91/x
  3. Step 3: Cross multiply
    138,840.06x = 191,599.39 × 75,177.91
  4. Step 4: Simplify right side
    138,840.06x = 14,404,041,697.47
  5. Step 5: Solve for x
    x = 14,404,041,697.47/138,840.06
  6. Step 6: Final answer
    x = 103,745.57

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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.