Home / 213,456.09-320,136.96-61,620.17

Finding the Fourth Proportional to 213,456.09, 320,136.96 and 61,620.17

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Solution

The fourth proportional to 213,456.09, 320,136.96 and 61,620.17 is: 92,416.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,456.09 : 320,136.96 = 61,620.17 : x
  2. Step 2: Convert to fraction form
    213,456.09/320,136.96 = 61,620.17/x
  3. Step 3: Cross multiply
    213,456.09x = 320,136.96 × 61,620.17
  4. Step 4: Simplify right side
    213,456.09x = 19,726,893,342.61
  5. Step 5: Solve for x
    x = 19,726,893,342.61/213,456.09
  6. Step 6: Final answer
    x = 92,416.63

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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.