Home / 156,690.20-216,232.62-85,070.18

Finding the Fourth Proportional to 156,690.20, 216,232.62 and 85,070.18

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Solution

The fourth proportional to 156,690.20, 216,232.62 and 85,070.18 is: 117,396.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,690.20 : 216,232.62 = 85,070.18 : x
  2. Step 2: Convert to fraction form
    156,690.20/216,232.62 = 85,070.18/x
  3. Step 3: Cross multiply
    156,690.20x = 216,232.62 × 85,070.18
  4. Step 4: Simplify right side
    156,690.20x = 18,394,947,905.27
  5. Step 5: Solve for x
    x = 18,394,947,905.27/156,690.20
  6. Step 6: Final answer
    x = 117,396.93

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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.