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Finding the Fourth Proportional to 187,415.20, 281,025.60 and 69,025.60

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Solution

The fourth proportional to 187,415.20, 281,025.60 and 69,025.60 is: 103,502.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,415.20 : 281,025.60 = 69,025.60 : x
  2. Step 2: Convert to fraction form
    187,415.20/281,025.60 = 69,025.60/x
  3. Step 3: Cross multiply
    187,415.20x = 281,025.60 × 69,025.60
  4. Step 4: Simplify right side
    187,415.20x = 19,397,960,655.36
  5. Step 5: Solve for x
    x = 19,397,960,655.36/187,415.20
  6. Step 6: Final answer
    x = 103,502.60

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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.