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Finding the Fourth Proportional to 103,693.40, 155,540.10 and 95,091.80

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Solution

The fourth proportional to 103,693.40, 155,540.10 and 95,091.80 is: 142,637.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,693.40 : 155,540.10 = 95,091.80 : x
  2. Step 2: Convert to fraction form
    103,693.40/155,540.10 = 95,091.80/x
  3. Step 3: Cross multiply
    103,693.40x = 155,540.10 × 95,091.80
  4. Step 4: Simplify right side
    103,693.40x = 14,790,588,081.18
  5. Step 5: Solve for x
    x = 14,790,588,081.18/103,693.40
  6. Step 6: Final answer
    x = 142,637.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.