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Finding the Fourth Proportional to 104,294.64, 143,885.90 and 68,038.71

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Solution

The fourth proportional to 104,294.64, 143,885.90 and 68,038.71 is: 93,866.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,294.64 : 143,885.90 = 68,038.71 : x
  2. Step 2: Convert to fraction form
    104,294.64/143,885.90 = 68,038.71/x
  3. Step 3: Cross multiply
    104,294.64x = 143,885.90 × 68,038.71
  4. Step 4: Simplify right side
    104,294.64x = 9,789,811,023.19
  5. Step 5: Solve for x
    x = 9,789,811,023.19/104,294.64
  6. Step 6: Final answer
    x = 93,866.87

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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.