Home / 102,018.20-140,782.31-56,695.04

Finding the Fourth Proportional to 102,018.20, 140,782.31 and 56,695.04

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Solution

The fourth proportional to 102,018.20, 140,782.31 and 56,695.04 is: 78,237.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,018.20 : 140,782.31 = 56,695.04 : x
  2. Step 2: Convert to fraction form
    102,018.20/140,782.31 = 56,695.04/x
  3. Step 3: Cross multiply
    102,018.20x = 140,782.31 × 56,695.04
  4. Step 4: Simplify right side
    102,018.20x = 7,981,658,413.27
  5. Step 5: Solve for x
    x = 7,981,658,413.27/102,018.20
  6. Step 6: Final answer
    x = 78,237.59

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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.