Home / 187,135.90-280,815.02-68,890.28

Finding the Fourth Proportional to 187,135.90, 280,815.02 and 68,890.28

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Solution

The fourth proportional to 187,135.90, 280,815.02 and 68,890.28 is: 103,376.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,135.90 : 280,815.02 = 68,890.28 : x
  2. Step 2: Convert to fraction form
    187,135.90/280,815.02 = 68,890.28/x
  3. Step 3: Cross multiply
    187,135.90x = 280,815.02 × 68,890.28
  4. Step 4: Simplify right side
    187,135.90x = 19,345,425,356.01
  5. Step 5: Solve for x
    x = 19,345,425,356.01/187,135.90
  6. Step 6: Final answer
    x = 103,376.34

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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.