Home / 129,829.30-194,741.93-66,612.94

Finding the Fourth Proportional to 129,829.30, 194,741.93 and 66,612.94

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Solution

The fourth proportional to 129,829.30, 194,741.93 and 66,612.94 is: 99,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,829.30 : 194,741.93 = 66,612.94 : x
  2. Step 2: Convert to fraction form
    129,829.30/194,741.93 = 66,612.94/x
  3. Step 3: Cross multiply
    129,829.30x = 194,741.93 × 66,612.94
  4. Step 4: Simplify right side
    129,829.30x = 12,972,331,678.65
  5. Step 5: Solve for x
    x = 12,972,331,678.65/129,829.30
  6. Step 6: Final answer
    x = 99,918.37

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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.