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Finding the Fourth Proportional to 187,400.87, 280,976.72 and 103,200.68

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Solution

The fourth proportional to 187,400.87, 280,976.72 and 103,200.68 is: 154,732.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,400.87 : 280,976.72 = 103,200.68 : x
  2. Step 2: Convert to fraction form
    187,400.87/280,976.72 = 103,200.68/x
  3. Step 3: Cross multiply
    187,400.87x = 280,976.72 × 103,200.68
  4. Step 4: Simplify right side
    187,400.87x = 28,996,986,647.28
  5. Step 5: Solve for x
    x = 28,996,986,647.28/187,400.87
  6. Step 6: Final answer
    x = 154,732.41

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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.