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Finding the Fourth Proportional to 103,953.55, 155,930.33 and 51,465.55

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Solution

The fourth proportional to 103,953.55, 155,930.33 and 51,465.55 is: 77,198.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,953.55 : 155,930.33 = 51,465.55 : x
  2. Step 2: Convert to fraction form
    103,953.55/155,930.33 = 51,465.55/x
  3. Step 3: Cross multiply
    103,953.55x = 155,930.33 × 51,465.55
  4. Step 4: Simplify right side
    103,953.55x = 8,025,039,937.80
  5. Step 5: Solve for x
    x = 8,025,039,937.80/103,953.55
  6. Step 6: Final answer
    x = 77,198.33

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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.