Home / 156,641.28-216,165.14-85,021.30

Finding the Fourth Proportional to 156,641.28, 216,165.14 and 85,021.30

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Solution

The fourth proportional to 156,641.28, 216,165.14 and 85,021.30 is: 117,329.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,641.28 : 216,165.14 = 85,021.30 : x
  2. Step 2: Convert to fraction form
    156,641.28/216,165.14 = 85,021.30/x
  3. Step 3: Cross multiply
    156,641.28x = 216,165.14 × 85,021.30
  4. Step 4: Simplify right side
    156,641.28x = 18,378,641,217.48
  5. Step 5: Solve for x
    x = 18,378,641,217.48/156,641.28
  6. Step 6: Final answer
    x = 117,329.49

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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.