Home / 285,766.02-428,665.23-86,113.98

Finding the Fourth Proportional to 285,766.02, 428,665.23 and 86,113.98

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Solution

The fourth proportional to 285,766.02, 428,665.23 and 86,113.98 is: 129,175.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,766.02 : 428,665.23 = 86,113.98 : x
  2. Step 2: Convert to fraction form
    285,766.02/428,665.23 = 86,113.98/x
  3. Step 3: Cross multiply
    285,766.02x = 428,665.23 × 86,113.98
  4. Step 4: Simplify right side
    285,766.02x = 36,914,069,042.92
  5. Step 5: Solve for x
    x = 36,914,069,042.92/285,766.02
  6. Step 6: Final answer
    x = 129,175.85

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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.