Home / 138,810.67-191,560.07-75,149.82

Finding the Fourth Proportional to 138,810.67, 191,560.07 and 75,149.82

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Solution

The fourth proportional to 138,810.67, 191,560.07 and 75,149.82 is: 103,707.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,810.67 : 191,560.07 = 75,149.82 : x
  2. Step 2: Convert to fraction form
    138,810.67/191,560.07 = 75,149.82/x
  3. Step 3: Cross multiply
    138,810.67x = 191,560.07 × 75,149.82
  4. Step 4: Simplify right side
    138,810.67x = 14,395,704,967.56
  5. Step 5: Solve for x
    x = 14,395,704,967.56/138,810.67
  6. Step 6: Final answer
    x = 103,707.48

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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.