Home / 129,288.12-194,113.83-66,153.52

Finding the Fourth Proportional to 129,288.12, 194,113.83 and 66,153.52

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Solution

The fourth proportional to 129,288.12, 194,113.83 and 66,153.52 is: 99,323.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,288.12 : 194,113.83 = 66,153.52 : x
  2. Step 2: Convert to fraction form
    129,288.12/194,113.83 = 66,153.52/x
  3. Step 3: Cross multiply
    129,288.12x = 194,113.83 × 66,153.52
  4. Step 4: Simplify right side
    129,288.12x = 12,841,313,135.18
  5. Step 5: Solve for x
    x = 12,841,313,135.18/129,288.12
  6. Step 6: Final answer
    x = 99,323.23

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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.