Home / 156,836.67-216,431.49-85,217.21

Finding the Fourth Proportional to 156,836.67, 216,431.49 and 85,217.21

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Solution

The fourth proportional to 156,836.67, 216,431.49 and 85,217.21 is: 117,598.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,836.67 : 216,431.49 = 85,217.21 : x
  2. Step 2: Convert to fraction form
    156,836.67/216,431.49 = 85,217.21/x
  3. Step 3: Cross multiply
    156,836.67x = 216,431.49 × 85,217.21
  4. Step 4: Simplify right side
    156,836.67x = 18,443,686,651.79
  5. Step 5: Solve for x
    x = 18,443,686,651.79/156,836.67
  6. Step 6: Final answer
    x = 117,598.05

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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.