Home / 136,643.48-188,568.27-76,218.04

Finding the Fourth Proportional to 136,643.48, 188,568.27 and 76,218.04

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Solution

The fourth proportional to 136,643.48, 188,568.27 and 76,218.04 is: 105,181.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,643.48 : 188,568.27 = 76,218.04 : x
  2. Step 2: Convert to fraction form
    136,643.48/188,568.27 = 76,218.04/x
  3. Step 3: Cross multiply
    136,643.48x = 188,568.27 × 76,218.04
  4. Step 4: Simplify right side
    136,643.48x = 14,372,303,895.48
  5. Step 5: Solve for x
    x = 14,372,303,895.48/136,643.48
  6. Step 6: Final answer
    x = 105,181.04

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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.