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Finding the Fourth Proportional to 123,484.64, 170,406.45 and 69,036.57

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Solution

The fourth proportional to 123,484.64, 170,406.45 and 69,036.57 is: 95,269.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,484.64 : 170,406.45 = 69,036.57 : x
  2. Step 2: Convert to fraction form
    123,484.64/170,406.45 = 69,036.57/x
  3. Step 3: Cross multiply
    123,484.64x = 170,406.45 × 69,036.57
  4. Step 4: Simplify right side
    123,484.64x = 11,764,276,813.88
  5. Step 5: Solve for x
    x = 11,764,276,813.88/123,484.64
  6. Step 6: Final answer
    x = 95,269.15

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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.