Home / 172,117.37-258,277.11-72,269.89

Finding the Fourth Proportional to 172,117.37, 258,277.11 and 72,269.89

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Solution

The fourth proportional to 172,117.37, 258,277.11 and 72,269.89 is: 108,447.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,117.37 : 258,277.11 = 72,269.89 : x
  2. Step 2: Convert to fraction form
    172,117.37/258,277.11 = 72,269.89/x
  3. Step 3: Cross multiply
    172,117.37x = 258,277.11 × 72,269.89
  4. Step 4: Simplify right side
    172,117.37x = 18,665,657,412.51
  5. Step 5: Solve for x
    x = 18,665,657,412.51/172,117.37
  6. Step 6: Final answer
    x = 108,447.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.