Home / 156,628.91-216,148.68-85,009.03

Finding the Fourth Proportional to 156,628.91, 216,148.68 and 85,009.03

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Solution

The fourth proportional to 156,628.91, 216,148.68 and 85,009.03 is: 117,312.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,628.91 : 216,148.68 = 85,009.03 : x
  2. Step 2: Convert to fraction form
    156,628.91/216,148.68 = 85,009.03/x
  3. Step 3: Cross multiply
    156,628.91x = 216,148.68 × 85,009.03
  4. Step 4: Simplify right side
    156,628.91x = 18,374,589,082.21
  5. Step 5: Solve for x
    x = 18,374,589,082.21/156,628.91
  6. Step 6: Final answer
    x = 117,312.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.