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Finding the Fourth Proportional to 103,086.45, 154,689.12 and 55,701.63

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Solution

The fourth proportional to 103,086.45, 154,689.12 and 55,701.63 is: 83,584.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,086.45 : 154,689.12 = 55,701.63 : x
  2. Step 2: Convert to fraction form
    103,086.45/154,689.12 = 55,701.63/x
  3. Step 3: Cross multiply
    103,086.45x = 154,689.12 × 55,701.63
  4. Step 4: Simplify right side
    103,086.45x = 8,616,436,127.27
  5. Step 5: Solve for x
    x = 8,616,436,127.27/103,086.45
  6. Step 6: Final answer
    x = 83,584.57

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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.