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Finding the Fourth Proportional to 150,313.61, 207,381.29 and 85,736.45

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Solution

The fourth proportional to 150,313.61, 207,381.29 and 85,736.45 is: 118,286.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,313.61 : 207,381.29 = 85,736.45 : x
  2. Step 2: Convert to fraction form
    150,313.61/207,381.29 = 85,736.45/x
  3. Step 3: Cross multiply
    150,313.61x = 207,381.29 × 85,736.45
  4. Step 4: Simplify right side
    150,313.61x = 17,780,135,601.02
  5. Step 5: Solve for x
    x = 17,780,135,601.02/150,313.61
  6. Step 6: Final answer
    x = 118,286.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.