Home / 72,128.48-108,192.11-19,537.61

Finding the Fourth Proportional to 72,128.48, 108,192.11 and 19,537.61

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Solution

The fourth proportional to 72,128.48, 108,192.11 and 19,537.61 is: 29,306.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,128.48 : 108,192.11 = 19,537.61 : x
  2. Step 2: Convert to fraction form
    72,128.48/108,192.11 = 19,537.61/x
  3. Step 3: Cross multiply
    72,128.48x = 108,192.11 × 19,537.61
  4. Step 4: Simplify right side
    72,128.48x = 2,113,814,611.61
  5. Step 5: Solve for x
    x = 2,113,814,611.61/72,128.48
  6. Step 6: Final answer
    x = 29,306.24

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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.