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Finding the Fourth Proportional to 187,293.50, 280,940.52 and 76,485.50

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Solution

The fourth proportional to 187,293.50, 280,940.52 and 76,485.50 is: 114,728.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,293.50 : 280,940.52 = 76,485.50 : x
  2. Step 2: Convert to fraction form
    187,293.50/280,940.52 = 76,485.50/x
  3. Step 3: Cross multiply
    187,293.50x = 280,940.52 × 76,485.50
  4. Step 4: Simplify right side
    187,293.50x = 21,487,876,142.46
  5. Step 5: Solve for x
    x = 21,487,876,142.46/187,293.50
  6. Step 6: Final answer
    x = 114,728.36

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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.