Home / 127,742.34-176,286.12-71,153.70

Finding the Fourth Proportional to 127,742.34, 176,286.12 and 71,153.70

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Solution

The fourth proportional to 127,742.34, 176,286.12 and 71,153.70 is: 98,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,742.34 : 176,286.12 = 71,153.70 : x
  2. Step 2: Convert to fraction form
    127,742.34/176,286.12 = 71,153.70/x
  3. Step 3: Cross multiply
    127,742.34x = 176,286.12 × 71,153.70
  4. Step 4: Simplify right side
    127,742.34x = 12,543,409,696.64
  5. Step 5: Solve for x
    x = 12,543,409,696.64/127,742.34
  6. Step 6: Final answer
    x = 98,193.05

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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.