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Finding the Fourth Proportional to 103,874.21, 143,314.53 and 63,545.93

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Solution

The fourth proportional to 103,874.21, 143,314.53 and 63,545.93 is: 87,673.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,874.21 : 143,314.53 = 63,545.93 : x
  2. Step 2: Convert to fraction form
    103,874.21/143,314.53 = 63,545.93/x
  3. Step 3: Cross multiply
    103,874.21x = 143,314.53 × 63,545.93
  4. Step 4: Simplify right side
    103,874.21x = 9,107,054,374.79
  5. Step 5: Solve for x
    x = 9,107,054,374.79/103,874.21
  6. Step 6: Final answer
    x = 87,673.88

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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.