Home / 285,766.77-428,666.36-86,114.73

Finding the Fourth Proportional to 285,766.77, 428,666.36 and 86,114.73

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Solution

The fourth proportional to 285,766.77, 428,666.36 and 86,114.73 is: 129,176.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,766.77 : 428,666.36 = 86,114.73 : x
  2. Step 2: Convert to fraction form
    285,766.77/428,666.36 = 86,114.73/x
  3. Step 3: Cross multiply
    285,766.77x = 428,666.36 × 86,114.73
  4. Step 4: Simplify right side
    285,766.77x = 36,914,487,420.91
  5. Step 5: Solve for x
    x = 36,914,487,420.91/285,766.77
  6. Step 6: Final answer
    x = 129,176.98

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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.