Home / 156,917.84-216,544.06-85,299.66

Finding the Fourth Proportional to 156,917.84, 216,544.06 and 85,299.66

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Solution

The fourth proportional to 156,917.84, 216,544.06 and 85,299.66 is: 117,712.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,917.84 : 216,544.06 = 85,299.66 : x
  2. Step 2: Convert to fraction form
    156,917.84/216,544.06 = 85,299.66/x
  3. Step 3: Cross multiply
    156,917.84x = 216,544.06 × 85,299.66
  4. Step 4: Simplify right side
    156,917.84x = 18,471,134,479.77
  5. Step 5: Solve for x
    x = 18,471,134,479.77/156,917.84
  6. Step 6: Final answer
    x = 117,712.14

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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.