Home / 117,890.12-162,688.38-64,175.54

Finding the Fourth Proportional to 117,890.12, 162,688.38 and 64,175.54

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Solution

The fourth proportional to 117,890.12, 162,688.38 and 64,175.54 is: 88,562.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,890.12 : 162,688.38 = 64,175.54 : x
  2. Step 2: Convert to fraction form
    117,890.12/162,688.38 = 64,175.54/x
  3. Step 3: Cross multiply
    117,890.12x = 162,688.38 × 64,175.54
  4. Step 4: Simplify right side
    117,890.12x = 10,440,613,824.78
  5. Step 5: Solve for x
    x = 10,440,613,824.78/117,890.12
  6. Step 6: Final answer
    x = 88,562.24

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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.