Home / 170,240.86-255,016.16-78,928

Finding the Fourth Proportional to 170,240.86, 255,016.16 and 78,928

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Solution

The fourth proportional to 170,240.86, 255,016.16 and 78,928 is: 118,231.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,240.86 : 255,016.16 = 78,928 : x
  2. Step 2: Convert to fraction form
    170,240.86/255,016.16 = 78,928/x
  3. Step 3: Cross multiply
    170,240.86x = 255,016.16 × 78,928
  4. Step 4: Simplify right side
    170,240.86x = 20,127,915,476.48
  5. Step 5: Solve for x
    x = 20,127,915,476.48/170,240.86
  6. Step 6: Final answer
    x = 118,231.99

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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.