Home / 156,836.79-216,434.41-85,217.10

Finding the Fourth Proportional to 156,836.79, 216,434.41 and 85,217.10

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Solution

The fourth proportional to 156,836.79, 216,434.41 and 85,217.10 is: 117,599.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,836.79 : 216,434.41 = 85,217.10 : x
  2. Step 2: Convert to fraction form
    156,836.79/216,434.41 = 85,217.10/x
  3. Step 3: Cross multiply
    156,836.79x = 216,434.41 × 85,217.10
  4. Step 4: Simplify right side
    156,836.79x = 18,443,912,760.41
  5. Step 5: Solve for x
    x = 18,443,912,760.41/156,836.79
  6. Step 6: Final answer
    x = 117,599.40

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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.