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Finding the Fourth Proportional to 170,679.57, 235,428.17 and 103,611.57

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Solution

The fourth proportional to 170,679.57, 235,428.17 and 103,611.57 is: 142,917.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,679.57 : 235,428.17 = 103,611.57 : x
  2. Step 2: Convert to fraction form
    170,679.57/235,428.17 = 103,611.57/x
  3. Step 3: Cross multiply
    170,679.57x = 235,428.17 × 103,611.57
  4. Step 4: Simplify right side
    170,679.57x = 24,393,081,797.87
  5. Step 5: Solve for x
    x = 24,393,081,797.87/170,679.57
  6. Step 6: Final answer
    x = 142,917.41

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1.5x scale

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.