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Finding the Fourth Proportional to 157,768.74, 217,555.07 and 103,984.88

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Solution

The fourth proportional to 157,768.74, 217,555.07 and 103,984.88 is: 143,389.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,768.74 : 217,555.07 = 103,984.88 : x
  2. Step 2: Convert to fraction form
    157,768.74/217,555.07 = 103,984.88/x
  3. Step 3: Cross multiply
    157,768.74x = 217,555.07 × 103,984.88
  4. Step 4: Simplify right side
    157,768.74x = 22,622,436,239.64
  5. Step 5: Solve for x
    x = 22,622,436,239.64/157,768.74
  6. Step 6: Final answer
    x = 143,389.85

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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.