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Finding the Fourth Proportional to 171,473.40, 236,641.86 and 103,489.38

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Solution

The fourth proportional to 171,473.40, 236,641.86 and 103,489.38 is: 142,820.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,473.40 : 236,641.86 = 103,489.38 : x
  2. Step 2: Convert to fraction form
    171,473.40/236,641.86 = 103,489.38/x
  3. Step 3: Cross multiply
    171,473.40x = 236,641.86 × 103,489.38
  4. Step 4: Simplify right side
    171,473.40x = 24,489,919,373.45
  5. Step 5: Solve for x
    x = 24,489,919,373.45/171,473.40
  6. Step 6: Final answer
    x = 142,820.52

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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.