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Finding the Fourth Proportional to 113,865.80, 170,409.90 and 104,534.60

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Solution

The fourth proportional to 113,865.80, 170,409.90 and 104,534.60 is: 156,444.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,865.80 : 170,409.90 = 104,534.60 : x
  2. Step 2: Convert to fraction form
    113,865.80/170,409.90 = 104,534.60/x
  3. Step 3: Cross multiply
    113,865.80x = 170,409.90 × 104,534.60
  4. Step 4: Simplify right side
    113,865.80x = 17,813,730,732.54
  5. Step 5: Solve for x
    x = 17,813,730,732.54/113,865.80
  6. Step 6: Final answer
    x = 156,444.96

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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.