Home / 103,699.08-143,115.48-63,439.65

Finding the Fourth Proportional to 103,699.08, 143,115.48 and 63,439.65

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Solution

The fourth proportional to 103,699.08, 143,115.48 and 63,439.65 is: 87,553.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,699.08 : 143,115.48 = 63,439.65 : x
  2. Step 2: Convert to fraction form
    103,699.08/143,115.48 = 63,439.65/x
  3. Step 3: Cross multiply
    103,699.08x = 143,115.48 × 63,439.65
  4. Step 4: Simplify right side
    103,699.08x = 9,079,195,960.78
  5. Step 5: Solve for x
    x = 9,079,195,960.78/103,699.08
  6. Step 6: Final answer
    x = 87,553.29

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1.5x scale

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.