Home / 156,972.20-216,621.14-85,352.40

Finding the Fourth Proportional to 156,972.20, 216,621.14 and 85,352.40

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Solution

The fourth proportional to 156,972.20, 216,621.14 and 85,352.40 is: 117,786.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,972.20 : 216,621.14 = 85,352.40 : x
  2. Step 2: Convert to fraction form
    156,972.20/216,621.14 = 85,352.40/x
  3. Step 3: Cross multiply
    156,972.20x = 216,621.14 × 85,352.40
  4. Step 4: Simplify right side
    156,972.20x = 18,489,133,762.97
  5. Step 5: Solve for x
    x = 18,489,133,762.97/156,972.20
  6. Step 6: Final answer
    x = 117,786.04

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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.