Home / 86,219.88-129,283.64-38,144.76

Finding the Fourth Proportional to 86,219.88, 129,283.64 and 38,144.76

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Solution

The fourth proportional to 86,219.88, 129,283.64 and 38,144.76 is: 57,196.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,219.88 : 129,283.64 = 38,144.76 : x
  2. Step 2: Convert to fraction form
    86,219.88/129,283.64 = 38,144.76/x
  3. Step 3: Cross multiply
    86,219.88x = 129,283.64 × 38,144.76
  4. Step 4: Simplify right side
    86,219.88x = 4,931,493,419.73
  5. Step 5: Solve for x
    x = 4,931,493,419.73/86,219.88
  6. Step 6: Final answer
    x = 57,196.71

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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.