Home / 156,974.20-216,623.90-85,354.40

Finding the Fourth Proportional to 156,974.20, 216,623.90 and 85,354.40

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Solution

The fourth proportional to 156,974.20, 216,623.90 and 85,354.40 is: 117,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,974.20 : 216,623.90 = 85,354.40 : x
  2. Step 2: Convert to fraction form
    156,974.20/216,623.90 = 85,354.40/x
  3. Step 3: Cross multiply
    156,974.20x = 216,623.90 × 85,354.40
  4. Step 4: Simplify right side
    156,974.20x = 18,489,803,010.16
  5. Step 5: Solve for x
    x = 18,489,803,010.16/156,974.20
  6. Step 6: Final answer
    x = 117,788.80

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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.