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Finding the Fourth Proportional to 157,682.37, 217,568.36 and 100,300.80

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Solution

The fourth proportional to 157,682.37, 217,568.36 and 100,300.80 is: 138,393.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,682.37 : 217,568.36 = 100,300.80 : x
  2. Step 2: Convert to fraction form
    157,682.37/217,568.36 = 100,300.80/x
  3. Step 3: Cross multiply
    157,682.37x = 217,568.36 × 100,300.80
  4. Step 4: Simplify right side
    157,682.37x = 21,822,280,061.18
  5. Step 5: Solve for x
    x = 21,822,280,061.18/157,682.37
  6. Step 6: Final answer
    x = 138,393.91

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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.