Home / 156,972.30-216,619.20-85,354.13

Finding the Fourth Proportional to 156,972.30, 216,619.20 and 85,354.13

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Solution

The fourth proportional to 156,972.30, 216,619.20 and 85,354.13 is: 117,787.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,972.30 : 216,619.20 = 85,354.13 : x
  2. Step 2: Convert to fraction form
    156,972.30/216,619.20 = 85,354.13/x
  3. Step 3: Cross multiply
    156,972.30x = 216,619.20 × 85,354.13
  4. Step 4: Simplify right side
    156,972.30x = 18,489,343,357.30
  5. Step 5: Solve for x
    x = 18,489,343,357.30/156,972.30
  6. Step 6: Final answer
    x = 117,787.30

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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.