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Finding the Fourth Proportional to 123,445.79, 170,358.69 and 69,733.07

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Solution

The fourth proportional to 123,445.79, 170,358.69 and 69,733.07 is: 96,233.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,445.79 : 170,358.69 = 69,733.07 : x
  2. Step 2: Convert to fraction form
    123,445.79/170,358.69 = 69,733.07/x
  3. Step 3: Cross multiply
    123,445.79x = 170,358.69 × 69,733.07
  4. Step 4: Simplify right side
    123,445.79x = 11,879,634,454.88
  5. Step 5: Solve for x
    x = 11,879,634,454.88/123,445.79
  6. Step 6: Final answer
    x = 96,233.61

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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.