Home / 172,187.28-258,239.82-72,349.38

Finding the Fourth Proportional to 172,187.28, 258,239.82 and 72,349.38

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Solution

The fourth proportional to 172,187.28, 258,239.82 and 72,349.38 is: 108,506.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,187.28 : 258,239.82 = 72,349.38 : x
  2. Step 2: Convert to fraction form
    172,187.28/258,239.82 = 72,349.38/x
  3. Step 3: Cross multiply
    172,187.28x = 258,239.82 × 72,349.38
  4. Step 4: Simplify right side
    172,187.28x = 18,683,490,868.31
  5. Step 5: Solve for x
    x = 18,683,490,868.31/172,187.28
  6. Step 6: Final answer
    x = 108,506.80

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1.5x scale

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.