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Finding the Fourth Proportional to 103,431.70, 155,147.55 and 44,382.70

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Solution

The fourth proportional to 103,431.70, 155,147.55 and 44,382.70 is: 66,574.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,431.70 : 155,147.55 = 44,382.70 : x
  2. Step 2: Convert to fraction form
    103,431.70/155,147.55 = 44,382.70/x
  3. Step 3: Cross multiply
    103,431.70x = 155,147.55 × 44,382.70
  4. Step 4: Simplify right side
    103,431.70x = 6,885,867,167.39
  5. Step 5: Solve for x
    x = 6,885,867,167.39/103,431.70
  6. Step 6: Final answer
    x = 66,574.05

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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.