Home / 130,112.28-194,856.57-66,765.78

Finding the Fourth Proportional to 130,112.28, 194,856.57 and 66,765.78

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Solution

The fourth proportional to 130,112.28, 194,856.57 and 66,765.78 is: 99,988.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,112.28 : 194,856.57 = 66,765.78 : x
  2. Step 2: Convert to fraction form
    130,112.28/194,856.57 = 66,765.78/x
  3. Step 3: Cross multiply
    130,112.28x = 194,856.57 × 66,765.78
  4. Step 4: Simplify right side
    130,112.28x = 13,009,750,884.17
  5. Step 5: Solve for x
    x = 13,009,750,884.17/130,112.28
  6. Step 6: Final answer
    x = 99,988.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.