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Finding the Fourth Proportional to 103,903.53, 155,574.20 and 53,878.47

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Solution

The fourth proportional to 103,903.53, 155,574.20 and 53,878.47 is: 80,671.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,903.53 : 155,574.20 = 53,878.47 : x
  2. Step 2: Convert to fraction form
    103,903.53/155,574.20 = 53,878.47/x
  3. Step 3: Cross multiply
    103,903.53x = 155,574.20 × 53,878.47
  4. Step 4: Simplify right side
    103,903.53x = 8,382,099,115.70
  5. Step 5: Solve for x
    x = 8,382,099,115.70/103,903.53
  6. Step 6: Final answer
    x = 80,671.94

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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.