Home / 127,639.95-176,191.33-100,344.83

Finding the Fourth Proportional to 127,639.95, 176,191.33 and 100,344.83

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Solution

The fourth proportional to 127,639.95, 176,191.33 and 100,344.83 is: 138,513.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,639.95 : 176,191.33 = 100,344.83 : x
  2. Step 2: Convert to fraction form
    127,639.95/176,191.33 = 100,344.83/x
  3. Step 3: Cross multiply
    127,639.95x = 176,191.33 × 100,344.83
  4. Step 4: Simplify right side
    127,639.95x = 17,679,888,049.94
  5. Step 5: Solve for x
    x = 17,679,888,049.94/127,639.95
  6. Step 6: Final answer
    x = 138,513.75

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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.