Home / 129,973.10-194,631.60-85,358.30

Finding the Fourth Proportional to 129,973.10, 194,631.60 and 85,358.30

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Solution

The fourth proportional to 129,973.10, 194,631.60 and 85,358.30 is: 127,822.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,973.10 : 194,631.60 = 85,358.30 : x
  2. Step 2: Convert to fraction form
    129,973.10/194,631.60 = 85,358.30/x
  3. Step 3: Cross multiply
    129,973.10x = 194,631.60 × 85,358.30
  4. Step 4: Simplify right side
    129,973.10x = 16,613,422,502.28
  5. Step 5: Solve for x
    x = 16,613,422,502.28/129,973.10
  6. Step 6: Final answer
    x = 127,822.01

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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.