Home / 135,858.31-187,490.32-75,428.96

Finding the Fourth Proportional to 135,858.31, 187,490.32 and 75,428.96

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Solution

The fourth proportional to 135,858.31, 187,490.32 and 75,428.96 is: 104,095.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,858.31 : 187,490.32 = 75,428.96 : x
  2. Step 2: Convert to fraction form
    135,858.31/187,490.32 = 75,428.96/x
  3. Step 3: Cross multiply
    135,858.31x = 187,490.32 × 75,428.96
  4. Step 4: Simplify right side
    135,858.31x = 14,142,199,370.19
  5. Step 5: Solve for x
    x = 14,142,199,370.19/135,858.31
  6. Step 6: Final answer
    x = 104,095.21

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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.