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Finding the Fourth Proportional to 103,679.40, 155,519.10 and 95,077.80

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Solution

The fourth proportional to 103,679.40, 155,519.10 and 95,077.80 is: 142,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,679.40 : 155,519.10 = 95,077.80 : x
  2. Step 2: Convert to fraction form
    103,679.40/155,519.10 = 95,077.80/x
  3. Step 3: Cross multiply
    103,679.40x = 155,519.10 × 95,077.80
  4. Step 4: Simplify right side
    103,679.40x = 14,786,413,885.98
  5. Step 5: Solve for x
    x = 14,786,413,885.98/103,679.40
  6. Step 6: Final answer
    x = 142,616.70

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1.5x scale

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.