Home / 156,935.63-216,562.89-85,315.33

Finding the Fourth Proportional to 156,935.63, 216,562.89 and 85,315.33

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Solution

The fourth proportional to 156,935.63, 216,562.89 and 85,315.33 is: 117,730.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,935.63 : 216,562.89 = 85,315.33 : x
  2. Step 2: Convert to fraction form
    156,935.63/216,562.89 = 85,315.33/x
  3. Step 3: Cross multiply
    156,935.63x = 216,562.89 × 85,315.33
  4. Step 4: Simplify right side
    156,935.63x = 18,476,133,558.62
  5. Step 5: Solve for x
    x = 18,476,133,558.62/156,935.63
  6. Step 6: Final answer
    x = 117,730.65

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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.