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Finding the Fourth Proportional to 103,488.70, 155,233.05 and 75,604.45

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Solution

The fourth proportional to 103,488.70, 155,233.05 and 75,604.45 is: 113,406.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,488.70 : 155,233.05 = 75,604.45 : x
  2. Step 2: Convert to fraction form
    103,488.70/155,233.05 = 75,604.45/x
  3. Step 3: Cross multiply
    103,488.70x = 155,233.05 × 75,604.45
  4. Step 4: Simplify right side
    103,488.70x = 11,736,309,367.07
  5. Step 5: Solve for x
    x = 11,736,309,367.07/103,488.70
  6. Step 6: Final answer
    x = 113,406.68

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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.