Home / 156,905.76-216,527.84-85,284.16

Finding the Fourth Proportional to 156,905.76, 216,527.84 and 85,284.16

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Solution

The fourth proportional to 156,905.76, 216,527.84 and 85,284.16 is: 117,690.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,905.76 : 216,527.84 = 85,284.16 : x
  2. Step 2: Convert to fraction form
    156,905.76/216,527.84 = 85,284.16/x
  3. Step 3: Cross multiply
    156,905.76x = 216,527.84 × 85,284.16
  4. Step 4: Simplify right side
    156,905.76x = 18,466,394,951.01
  5. Step 5: Solve for x
    x = 18,466,394,951.01/156,905.76
  6. Step 6: Final answer
    x = 117,690.99

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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.