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Finding the Fourth Proportional to 103,807.78, 143,246.13 and 58,471.30

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Solution

The fourth proportional to 103,807.78, 143,246.13 and 58,471.30 is: 80,685.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,807.78 : 143,246.13 = 58,471.30 : x
  2. Step 2: Convert to fraction form
    103,807.78/143,246.13 = 58,471.30/x
  3. Step 3: Cross multiply
    103,807.78x = 143,246.13 × 58,471.30
  4. Step 4: Simplify right side
    103,807.78x = 8,375,787,441.07
  5. Step 5: Solve for x
    x = 8,375,787,441.07/103,807.78
  6. Step 6: Final answer
    x = 80,685.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.