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Finding the Fourth Proportional to 103,937.58, 143,435.17 and 63,089.90

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Solution

The fourth proportional to 103,937.58, 143,435.17 and 63,089.90 is: 87,064.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,937.58 : 143,435.17 = 63,089.90 : x
  2. Step 2: Convert to fraction form
    103,937.58/143,435.17 = 63,089.90/x
  3. Step 3: Cross multiply
    103,937.58x = 143,435.17 × 63,089.90
  4. Step 4: Simplify right side
    103,937.58x = 9,049,310,531.78
  5. Step 5: Solve for x
    x = 9,049,310,531.78/103,937.58
  6. Step 6: Final answer
    x = 87,064.86

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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.