Home / 113,787.36-170,382.96-90,148.32

Finding the Fourth Proportional to 113,787.36, 170,382.96 and 90,148.32

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Solution

The fourth proportional to 113,787.36, 170,382.96 and 90,148.32 is: 134,986.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,787.36 : 170,382.96 = 90,148.32 : x
  2. Step 2: Convert to fraction form
    113,787.36/170,382.96 = 90,148.32/x
  3. Step 3: Cross multiply
    113,787.36x = 170,382.96 × 90,148.32
  4. Step 4: Simplify right side
    113,787.36x = 15,359,737,600.63
  5. Step 5: Solve for x
    x = 15,359,737,600.63/113,787.36
  6. Step 6: Final answer
    x = 134,986.33

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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.