Home / 170,782.78-255,999.15-71,000.86

Finding the Fourth Proportional to 170,782.78, 255,999.15 and 71,000.86

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Solution

The fourth proportional to 170,782.78, 255,999.15 and 71,000.86 is: 106,428.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,782.78 : 255,999.15 = 71,000.86 : x
  2. Step 2: Convert to fraction form
    170,782.78/255,999.15 = 71,000.86/x
  3. Step 3: Cross multiply
    170,782.78x = 255,999.15 × 71,000.86
  4. Step 4: Simplify right side
    170,782.78x = 18,176,159,809.27
  5. Step 5: Solve for x
    x = 18,176,159,809.27/170,782.78
  6. Step 6: Final answer
    x = 106,428.53

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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.