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Finding the Fourth Proportional to 157,373.45, 217,175.37 and 85,753.49

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Solution

The fourth proportional to 157,373.45, 217,175.37 and 85,753.49 is: 118,339.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,373.45 : 217,175.37 = 85,753.49 : x
  2. Step 2: Convert to fraction form
    157,373.45/217,175.37 = 85,753.49/x
  3. Step 3: Cross multiply
    157,373.45x = 217,175.37 × 85,753.49
  4. Step 4: Simplify right side
    157,373.45x = 18,623,545,919.54
  5. Step 5: Solve for x
    x = 18,623,545,919.54/157,373.45
  6. Step 6: Final answer
    x = 118,339.82

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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.