Home / 157,678.62-217,563.18-100,297.05

Finding the Fourth Proportional to 157,678.62, 217,563.18 and 100,297.05

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Solution

The fourth proportional to 157,678.62, 217,563.18 and 100,297.05 is: 138,388.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,678.62 : 217,563.18 = 100,297.05 : x
  2. Step 2: Convert to fraction form
    157,678.62/217,563.18 = 100,297.05/x
  3. Step 3: Cross multiply
    157,678.62x = 217,563.18 × 100,297.05
  4. Step 4: Simplify right side
    157,678.62x = 21,820,945,142.62
  5. Step 5: Solve for x
    x = 21,820,945,142.62/157,678.62
  6. Step 6: Final answer
    x = 138,388.74

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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.