Home / 157,839.25-217,816.86-86,219.29

Finding the Fourth Proportional to 157,839.25, 217,816.86 and 86,219.29

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Solution

The fourth proportional to 157,839.25, 217,816.86 and 86,219.29 is: 118,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,839.25 : 217,816.86 = 86,219.29 : x
  2. Step 2: Convert to fraction form
    157,839.25/217,816.86 = 86,219.29/x
  3. Step 3: Cross multiply
    157,839.25x = 217,816.86 × 86,219.29
  4. Step 4: Simplify right side
    157,839.25x = 18,780,015,019.23
  5. Step 5: Solve for x
    x = 18,780,015,019.23/157,839.25
  6. Step 6: Final answer
    x = 118,981.91

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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.