Home / 158,711.43-219,021.32-86,114.03

Finding the Fourth Proportional to 158,711.43, 219,021.32 and 86,114.03

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Solution

The fourth proportional to 158,711.43, 219,021.32 and 86,114.03 is: 118,837.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,711.43 : 219,021.32 = 86,114.03 : x
  2. Step 2: Convert to fraction form
    158,711.43/219,021.32 = 86,114.03/x
  3. Step 3: Cross multiply
    158,711.43x = 219,021.32 × 86,114.03
  4. Step 4: Simplify right side
    158,711.43x = 18,860,806,995.44
  5. Step 5: Solve for x
    x = 18,860,806,995.44/158,711.43
  6. Step 6: Final answer
    x = 118,837.11

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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.