Home / 156,784.29-216,366.35-85,168.41

Finding the Fourth Proportional to 156,784.29, 216,366.35 and 85,168.41

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Solution

The fourth proportional to 156,784.29, 216,366.35 and 85,168.41 is: 117,534.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,784.29 : 216,366.35 = 85,168.41 : x
  2. Step 2: Convert to fraction form
    156,784.29/216,366.35 = 85,168.41/x
  3. Step 3: Cross multiply
    156,784.29x = 216,366.35 × 85,168.41
  4. Step 4: Simplify right side
    156,784.29x = 18,427,578,007.00
  5. Step 5: Solve for x
    x = 18,427,578,007.00/156,784.29
  6. Step 6: Final answer
    x = 117,534.59

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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.