Home / 100,333.72-138,554.27-64,585.86

Finding the Fourth Proportional to 100,333.72, 138,554.27 and 64,585.86

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Solution

The fourth proportional to 100,333.72, 138,554.27 and 64,585.86 is: 89,188.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,333.72 : 138,554.27 = 64,585.86 : x
  2. Step 2: Convert to fraction form
    100,333.72/138,554.27 = 64,585.86/x
  3. Step 3: Cross multiply
    100,333.72x = 138,554.27 × 64,585.86
  4. Step 4: Simplify right side
    100,333.72x = 8,948,646,684.62
  5. Step 5: Solve for x
    x = 8,948,646,684.62/100,333.72
  6. Step 6: Final answer
    x = 89,188.83

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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.