Home / 103,175.03-142,321.05-64,873.86

Finding the Fourth Proportional to 103,175.03, 142,321.05 and 64,873.86

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Solution

The fourth proportional to 103,175.03, 142,321.05 and 64,873.86 is: 89,487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,175.03 : 142,321.05 = 64,873.86 : x
  2. Step 2: Convert to fraction form
    103,175.03/142,321.05 = 64,873.86/x
  3. Step 3: Cross multiply
    103,175.03x = 142,321.05 × 64,873.86
  4. Step 4: Simplify right side
    103,175.03x = 9,232,915,872.75
  5. Step 5: Solve for x
    x = 9,232,915,872.75/103,175.03
  6. Step 6: Final answer
    x = 89,487.90

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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.