Home / 187,321.11-281,129.28-69,075.48

Finding the Fourth Proportional to 187,321.11, 281,129.28 and 69,075.48

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Solution

The fourth proportional to 187,321.11, 281,129.28 and 69,075.48 is: 103,667.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,321.11 : 281,129.28 = 69,075.48 : x
  2. Step 2: Convert to fraction form
    187,321.11/281,129.28 = 69,075.48/x
  3. Step 3: Cross multiply
    187,321.11x = 281,129.28 × 69,075.48
  4. Step 4: Simplify right side
    187,321.11x = 19,419,141,141.81
  5. Step 5: Solve for x
    x = 19,419,141,141.81/187,321.11
  6. Step 6: Final answer
    x = 103,667.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.