Home / 172,323.18-237,770.78-100,689.36

Finding the Fourth Proportional to 172,323.18, 237,770.78 and 100,689.36

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Solution

The fourth proportional to 172,323.18, 237,770.78 and 100,689.36 is: 138,930.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,323.18 : 237,770.78 = 100,689.36 : x
  2. Step 2: Convert to fraction form
    172,323.18/237,770.78 = 100,689.36/x
  3. Step 3: Cross multiply
    172,323.18x = 237,770.78 × 100,689.36
  4. Step 4: Simplify right side
    172,323.18x = 23,940,986,269.81
  5. Step 5: Solve for x
    x = 23,940,986,269.81/172,323.18
  6. Step 6: Final answer
    x = 138,930.74

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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.