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Finding the Fourth Proportional to 123,558.67, 170,509.12 and 69,841.80

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Solution

The fourth proportional to 123,558.67, 170,509.12 and 69,841.80 is: 96,380.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,558.67 : 170,509.12 = 69,841.80 : x
  2. Step 2: Convert to fraction form
    123,558.67/170,509.12 = 69,841.80/x
  3. Step 3: Cross multiply
    123,558.67x = 170,509.12 × 69,841.80
  4. Step 4: Simplify right side
    123,558.67x = 11,908,663,857.22
  5. Step 5: Solve for x
    x = 11,908,663,857.22/123,558.67
  6. Step 6: Final answer
    x = 96,380.64

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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.