Home / 156,972.78-216,619.38-85,352.18

Finding the Fourth Proportional to 156,972.78, 216,619.38 and 85,352.18

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Solution

The fourth proportional to 156,972.78, 216,619.38 and 85,352.18 is: 117,784.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,972.78 : 216,619.38 = 85,352.18 : x
  2. Step 2: Convert to fraction form
    156,972.78/216,619.38 = 85,352.18/x
  3. Step 3: Cross multiply
    156,972.78x = 216,619.38 × 85,352.18
  4. Step 4: Simplify right side
    156,972.78x = 18,488,935,230.15
  5. Step 5: Solve for x
    x = 18,488,935,230.15/156,972.78
  6. Step 6: Final answer
    x = 117,784.34

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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.