Home / 156,799.92-216,384.30-85,179.36

Finding the Fourth Proportional to 156,799.92, 216,384.30 and 85,179.36

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Solution

The fourth proportional to 156,799.92, 216,384.30 and 85,179.36 is: 117,547.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,799.92 : 216,384.30 = 85,179.36 : x
  2. Step 2: Convert to fraction form
    156,799.92/216,384.30 = 85,179.36/x
  3. Step 3: Cross multiply
    156,799.92x = 216,384.30 × 85,179.36
  4. Step 4: Simplify right side
    156,799.92x = 18,431,476,188.05
  5. Step 5: Solve for x
    x = 18,431,476,188.05/156,799.92
  6. Step 6: Final answer
    x = 117,547.74

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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.