Home / 285,790.07-428,685.21-105,937.34

Finding the Fourth Proportional to 285,790.07, 428,685.21 and 105,937.34

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Solution

The fourth proportional to 285,790.07, 428,685.21 and 105,937.34 is: 158,906.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,790.07 : 428,685.21 = 105,937.34 : x
  2. Step 2: Convert to fraction form
    285,790.07/428,685.21 = 105,937.34/x
  3. Step 3: Cross multiply
    285,790.07x = 428,685.21 × 105,937.34
  4. Step 4: Simplify right side
    285,790.07x = 45,413,768,701.32
  5. Step 5: Solve for x
    x = 45,413,768,701.32/285,790.07
  6. Step 6: Final answer
    x = 158,906.04

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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.