Home / 102,380.22-141,356.75-71,818.29

Finding the Fourth Proportional to 102,380.22, 141,356.75 and 71,818.29

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Solution

The fourth proportional to 102,380.22, 141,356.75 and 71,818.29 is: 99,159.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,380.22 : 141,356.75 = 71,818.29 : x
  2. Step 2: Convert to fraction form
    102,380.22/141,356.75 = 71,818.29/x
  3. Step 3: Cross multiply
    102,380.22x = 141,356.75 × 71,818.29
  4. Step 4: Simplify right side
    102,380.22x = 10,151,999,705.87
  5. Step 5: Solve for x
    x = 10,151,999,705.87/102,380.22
  6. Step 6: Final answer
    x = 99,159.78

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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.