Home / 171,430.14-256,975.70-81,314.81

Finding the Fourth Proportional to 171,430.14, 256,975.70 and 81,314.81

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Solution

The fourth proportional to 171,430.14, 256,975.70 and 81,314.81 is: 121,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,430.14 : 256,975.70 = 81,314.81 : x
  2. Step 2: Convert to fraction form
    171,430.14/256,975.70 = 81,314.81/x
  3. Step 3: Cross multiply
    171,430.14x = 256,975.70 × 81,314.81
  4. Step 4: Simplify right side
    171,430.14x = 20,895,928,528.66
  5. Step 5: Solve for x
    x = 20,895,928,528.66/171,430.14
  6. Step 6: Final answer
    x = 121,891.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.