Home / 155,781.88-214,837.86-102,047.29

Finding the Fourth Proportional to 155,781.88, 214,837.86 and 102,047.29

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Solution

The fourth proportional to 155,781.88, 214,837.86 and 102,047.29 is: 140,732.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,781.88 : 214,837.86 = 102,047.29 : x
  2. Step 2: Convert to fraction form
    155,781.88/214,837.86 = 102,047.29/x
  3. Step 3: Cross multiply
    155,781.88x = 214,837.86 × 102,047.29
  4. Step 4: Simplify right side
    155,781.88x = 21,923,621,402.40
  5. Step 5: Solve for x
    x = 21,923,621,402.40/155,781.88
  6. Step 6: Final answer
    x = 140,732.81

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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.