Home / 199,827.88-275,885.46-128,333.90

Finding the Fourth Proportional to 199,827.88, 275,885.46 and 128,333.90

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Solution

The fourth proportional to 199,827.88, 275,885.46 and 128,333.90 is: 177,179.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,827.88 : 275,885.46 = 128,333.90 : x
  2. Step 2: Convert to fraction form
    199,827.88/275,885.46 = 128,333.90/x
  3. Step 3: Cross multiply
    199,827.88x = 275,885.46 × 128,333.90
  4. Step 4: Simplify right side
    199,827.88x = 35,405,457,724.81
  5. Step 5: Solve for x
    x = 35,405,457,724.81/199,827.88
  6. Step 6: Final answer
    x = 177,179.77

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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.