Home / 123,804.11-171,009.93-102,380.39

Finding the Fourth Proportional to 123,804.11, 171,009.93 and 102,380.39

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Solution

The fourth proportional to 123,804.11, 171,009.93 and 102,380.39 is: 141,417.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,804.11 : 171,009.93 = 102,380.39 : x
  2. Step 2: Convert to fraction form
    123,804.11/171,009.93 = 102,380.39/x
  3. Step 3: Cross multiply
    123,804.11x = 171,009.93 × 102,380.39
  4. Step 4: Simplify right side
    123,804.11x = 17,508,063,327.27
  5. Step 5: Solve for x
    x = 17,508,063,327.27/123,804.11
  6. Step 6: Final answer
    x = 141,417.46

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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.