Home / 128,072.18-176,882.33-99,732.75

Finding the Fourth Proportional to 128,072.18, 176,882.33 and 99,732.75

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Solution

The fourth proportional to 128,072.18, 176,882.33 and 99,732.75 is: 137,742.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,072.18 : 176,882.33 = 99,732.75 : x
  2. Step 2: Convert to fraction form
    128,072.18/176,882.33 = 99,732.75/x
  3. Step 3: Cross multiply
    128,072.18x = 176,882.33 × 99,732.75
  4. Step 4: Simplify right side
    128,072.18x = 17,640,960,698.64
  5. Step 5: Solve for x
    x = 17,640,960,698.64/128,072.18
  6. Step 6: Final answer
    x = 137,742.34

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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.