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Finding the Fourth Proportional to 123,295.56, 170,147.94 and 85,591.68

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Solution

The fourth proportional to 123,295.56, 170,147.94 and 85,591.68 is: 118,116.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,295.56 : 170,147.94 = 85,591.68 : x
  2. Step 2: Convert to fraction form
    123,295.56/170,147.94 = 85,591.68/x
  3. Step 3: Cross multiply
    123,295.56x = 170,147.94 × 85,591.68
  4. Step 4: Simplify right side
    123,295.56x = 14,563,248,033.14
  5. Step 5: Solve for x
    x = 14,563,248,033.14/123,295.56
  6. Step 6: Final answer
    x = 118,116.57

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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.