Home / 138,381.12-190,766.88-98,568

Finding the Fourth Proportional to 138,381.12, 190,766.88 and 98,568

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Solution

The fourth proportional to 138,381.12, 190,766.88 and 98,568 is: 135,882.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,381.12 : 190,766.88 = 98,568 : x
  2. Step 2: Convert to fraction form
    138,381.12/190,766.88 = 98,568/x
  3. Step 3: Cross multiply
    138,381.12x = 190,766.88 × 98,568
  4. Step 4: Simplify right side
    138,381.12x = 18,803,509,827.84
  5. Step 5: Solve for x
    x = 18,803,509,827.84/138,381.12
  6. Step 6: Final answer
    x = 135,882.05

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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.