Home / 129,475.40-193,921.50-66,314.84

Finding the Fourth Proportional to 129,475.40, 193,921.50 and 66,314.84

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Solution

The fourth proportional to 129,475.40, 193,921.50 and 66,314.84 is: 99,322.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,475.40 : 193,921.50 = 66,314.84 : x
  2. Step 2: Convert to fraction form
    129,475.40/193,921.50 = 66,314.84/x
  3. Step 3: Cross multiply
    129,475.40x = 193,921.50 × 66,314.84
  4. Step 4: Simplify right side
    129,475.40x = 12,859,873,245.06
  5. Step 5: Solve for x
    x = 12,859,873,245.06/129,475.40
  6. Step 6: Final answer
    x = 99,322.91

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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.