Home / 170,623.15-256,091.79-86,441.87

Finding the Fourth Proportional to 170,623.15, 256,091.79 and 86,441.87

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Solution

The fourth proportional to 170,623.15, 256,091.79 and 86,441.87 is: 129,742.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,623.15 : 256,091.79 = 86,441.87 : x
  2. Step 2: Convert to fraction form
    170,623.15/256,091.79 = 86,441.87/x
  3. Step 3: Cross multiply
    170,623.15x = 256,091.79 × 86,441.87
  4. Step 4: Simplify right side
    170,623.15x = 22,137,053,219.25
  5. Step 5: Solve for x
    x = 22,137,053,219.25/170,623.15
  6. Step 6: Final answer
    x = 129,742.38

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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.