Home / 129,132.66-193,282.35-66,717.30

Finding the Fourth Proportional to 129,132.66, 193,282.35 and 66,717.30

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Solution

The fourth proportional to 129,132.66, 193,282.35 and 66,717.30 is: 99,860.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,132.66 : 193,282.35 = 66,717.30 : x
  2. Step 2: Convert to fraction form
    129,132.66/193,282.35 = 66,717.30/x
  3. Step 3: Cross multiply
    129,132.66x = 193,282.35 × 66,717.30
  4. Step 4: Simplify right side
    129,132.66x = 12,895,276,529.66
  5. Step 5: Solve for x
    x = 12,895,276,529.66/129,132.66
  6. Step 6: Final answer
    x = 99,860.69

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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.