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Finding the Fourth Proportional to 187,285.80, 280,970.32 and 87,391.51

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Solution

The fourth proportional to 187,285.80, 280,970.32 and 87,391.51 is: 131,106.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,285.80 : 280,970.32 = 87,391.51 : x
  2. Step 2: Convert to fraction form
    187,285.80/280,970.32 = 87,391.51/x
  3. Step 3: Cross multiply
    187,285.80x = 280,970.32 × 87,391.51
  4. Step 4: Simplify right side
    187,285.80x = 24,554,419,772.94
  5. Step 5: Solve for x
    x = 24,554,419,772.94/187,285.80
  6. Step 6: Final answer
    x = 131,106.68

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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.